Re: [cobirds] Yard list questions: How many of CO's 520 species have been seen (or heard) from a yard?

[Jeff Percell]

Great thread,  I've enjoyed reading these.

*How long have you been keeping your list?* Coming up on 4 years!
*What's your style of yard listing:* casual, mainly feeder watching,
moderate, dedicated, obsessed? I would say dedicated, but others might call
it obsessed.
*How many species? *78
*Rarest, or favorite species? *I've had lots of good birds pass through -
Harris Sparrow, Black Headed Grosbeak, Green-tailed Towhee, Cassins Finch,
Western Tanager, Lazuli Bunting, Brown Creeper, etc. Its hard to pick
favorites, but the Bushtits are always a joy and relatively frequent, and
I've grown fond of the Calliope Hummers that are reliable in the fall since
I planted some hummingbird trumpets and agastache hyssop a few years ago.
Oh and the Great Horned Owls that occasionally visit the yard!
*Most memorable experience? *Probably the time I looked out my window the
morning after a light snow and saw a gray-crowned rosy finch! It was also
fun watching common nighthawks fly around late last fall.
*Location/habitat: urban, suburban, rural, etc? *Erie, a stone's throw into
Weld County; Suburban on the border of rural, several blue spruces and some
Cottonwoods, regularly fill feeders.

Here's my yard barchart, which has been fun to see develop.
Barchart:
https://ebird.org/barchart?r=L11071980=true

I also enjoy having a patch list which includes other personal spots in and
around my neighborhood. I have 95 species on those lists - best was
spotting a group of Black-bellied Plovers in the field up the street, which
I probably could have seen from my yard if I climbed on my roof.

Patch barchart:
https://ebird.org/barchart?r=L11071980,L11191295,L11547816,L11078897,L12074392,L11133195,L15956598,L11439744,L18673285=true

Good birding,
Jeff Percell
Erie, CO


On Mon, Mar 11, 2024, 7:14 PM DAVID J WALTMAN  wrote:

> I keep a neighborhood list rather than yard list.  We’re at 6,000 feet in
> the Boulder foothills half way between Boulder and Lyons.  My neighborhood
> includes the 1.7 miles from US 36 to our house.  I always have feeders but
> way fewer in the summer in recent years since the bears have been so
> pesty.  My list is 155 species.  Notable birds: Northern Goshawk,Dusky
> Grouse, Band-tailed Pigeon, Yellow-billed Cuckoo, Northern Pygmy-Owl,
> Northern Saw-whet Owl,Common Poorwill,Lewis’s Woodpecker, Williamson’s
> Sapsucker, Red-naped Sapsucker, Cassin’s Kingbird, Pinyon Jay, Eastern
> Towhee, Red Fox Sparrow, all three Rosy Finch, Pine Grosbeak, Common
> Redpoll.
>   The most shocking find was the Cuckoo.  I was walking and spotted it in
> one of the few deciduous trees among the ponderosa pines.  I tried to
> photograph it with my phone but the camera focused on the leaves instead of
> the bird.  I’m surprised I only get four hummingbird species.   I’ve seen
> three others in Boulder County but not at my house.
>   We’ve been here 25 years and I’ve been birding the neighborhood every
> day we’ve been home.  Binoculars always handy.
> David Waltman
> Boulder
>
> On 03/11/2024 10:40 AM MDT Thomas Heinrich  wrote:
>
>
> Hi all,
>
> Every now and then one of us will share the excitement of adding a rarity
> or new species to a yard list, report yard list totals, or comment on local
> trends. And some of the lists, includeand variety of species, are really
> impressive (e.g. David Suddjian's, Gary Lefko's).
> I’m
> Yellow Grosbeak, Pyrrhuloxia, Streak-backed Oriole, Long-billed Thrasher,
> Costa's Hummingbird, Laurence's Goldfinch, and even Anhinga come to mind as
> rarities that have shown up in or been observed from yards. (Perhaps the
> recent Brambling, too?)
>
> As a pretty obsessive yard lister (i.e. binocs always on, camera ready
> when outdoors, much of the time indoors too), I often wonder about others'
> experience with yard-listing.
>
> How long have you been keeping your list?
> What's your style of yard listing: casual, mainly feeder watching,
> moderate, dedicated, obsessed?
> How many species?
> Rarest, or favorite species?
> Most memorable experience?
> Location/habitat: urban, suburban, rural, etc?
>
> And the big question: if we tallied up all our yard lists, how close to
> Colorado's 520 species could we get?
>
> It seems likely that certain families would be less well-represented;
> shorebirds, waterfowl, and gulls, for example. But with neighborhoods
> lining bodies of water such as Boyd Lake, Lake Loveland, Marston Reservoir,
> Jackson Lake, and MacIntosh Lake (in Boulder), among many others, many of
> those species theoretically could have been counted on a yard list. Maybe
> some lucky person living on the shores of Boyd Lake has Long-tailed Jaeger,
> Slaty-backed Gull, and Garganey on their yard list!
>
> Wishing all good health, good birding, and an exciting Spring migration!
>
> --Thomas Heinrich
>
&g

[cobirds] BirdWeather

[Jeff Percell]

So this is pretty cool...

Have you ever wondered what all birds would be observed if you left
something like Merlin running on your phone outside your house all day?

A neighbor sent me this link where he set up his weather station to run
BirdNET-Pi, so now it is continually streaming audio to BirdNET for
identification, through a platform called BirdWeather. (BirdNET is a
similar project to Merlin). I think my neighbor has an admin interface
where he gets more interesting data, perhaps, but just from the public map
interface (link below), you can explore what birds have been identified
over the recent various time periods from 24 hours to a month. If you watch
the map it will also stream as birds are identified. Additionally you can
click in to listen to the audio clips from said observations.

There are about 20 stations across Colorado, in addition to my neighbor's
in Erie, and more than 200 across the world. It looks like Bird Weather has
several different station types, from one's like my neighbor's to live
audio & video streams, as well as other devices BirdWeather now sells.

I have a pretty healthy neighborhood patch list & barcharts in eBird (10-30
checklists/week of the year over the last 4 years). The only bird that my
neighbor's station has picked up that wasn't on my patch list is a
Woodhouse's Scrub-Jay from the afternoon of January 1. A very good bird for
Southwest Weld County (a stone's throw from Eastern Boulder County). Now I
just need to get out and scour the neighborhood to see if that Jay stuck
around.

My neighbor's station:
https://app.birdweather.com/stations/2300

More on Bird Weather & BirdNet:
https://www.birdweather.com/about
https://www.birdweather.com/about/stations
https://birdnet.cornell.edu/

***Caution: As with using the Merlin app, I assume this is perfectly
capable of incorrect identifications. Also you shouldn't use something like
a BirdWeather station to submit eBird lists, eBird rules explicitly states
to not report birds that are Remotely sensed images or video (assume same
goes for audio) ***

Happy New Year & Good Birding,
Jeff Percell
Erie, CO

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Re: [cobirds] Bird Names (long)

[Jeff Percell]

Thanks for sharing Rachel. I too wanted to share some insight into the
process that I came across which I thought might be helpful to some. I'd
encourage those interested in the subject to listen to the latest episode
of the Life List birding podcast (link below), in which Alvaro Jaramillo,
who served on the ad-hoc committee that made the recommendation to the AOS
regarding the bird name change, walks through a lot of detail and thought
that went into the process.

On topics like these I find it important to do more listening than
pontificating, and I thoroughly enjoyed listening to the hour+ long podcast
while driving between birding stops yesterday-- stops during which I
observed 61 bird species in Boulder County across 5 stops. With the time
spent yesterday, I'm not sure I deeply settled my own views on the root of
bird names, but I did gain a deeper appreciation for the world around me
and have several birding highlights that seemed worth sharing:

   - My first stop of the morning was a visit to Lagerman Reservoir which
   was really nothing to write home about for a trip to Lagerman, though I did
   note 2 snow geese amongst the hundreds of Cackling Geese -- 1 of which was
   an adult blue morph -- I'm hoping to visit Loess Bluffs National Wildlife
   Refuge in the next week or so, where tens and hundreds of thousands of snow
   geese can be seen.
   - My second stop was at Pella Crossing where there were a good number of
   Ring-necked Ducks, as well as quite a few White-crowned Sparrows (photo of
   a brown-crowned immature bird in the trip report).
   - For my 3rd stop, I joined the Lafayette Birding Club/meetup group
   along Old Saint Vrain Road outside of Lyons. It was a good walk with great
   company during which I had 3 first of year birds for myself -- a *Nucifraga
   columbiana *flying over, a raspberry crested finch, and a Canyon Wren
   (also a life bird for me!).
   - Stop number 4 was to Waneka Lake (random fact, this is where my senior
   photos where taken, as I attended high school in Lafayette along with 2
   members of the Waneka family). There I found a lingering Greater
   Yellowlegs, but certainly the highlight was striking up conversation with a
   couple who were visiting town from California. I was taking photos of a
   male Belted Kingfisher at Greenlee Preserve when dialogue around cameras
   led to deeper discussions about a variety of bird species, The Big Year and
   how to learn more about birds. The couple now has Merlin installed, will
   possibly be diving into eBird, and indicated they will be investigating
   what sort of bird walks are offered closer to home. By the way - if you've
   never joined a 1st-Sunday-of-the-month Bird Walk at Waneka Lake with
   Lafayette Birds!, you're missing out!
   - Stop number 5 was back in my patch at Erie Reservoir (or is it lake?)
   where a good number of Aythya have gathered in the last week or so.

Life List Podcast:
https://podcasts.apple.com/us/podcast/changing-bird-names-deep-diving-the-aos-decision/id1578168978?i=1000634169131

Trip Report:
https://ebird.org/tripreport/170828

Make every day a big day.

Good birding,
Jeff Percell
Erie, CO

On Tue, Nov 7, 2023 at 7:08 PM Rachel Kolokoff Hopper 
wrote:

> The underbelly of the decision…worth a read if you want to more fully
> understand.
>
> From Van Remsen, now former member of the NACC (North American
> Classification Committee.) If you don’t know who Van is, Google him. Posted
> here with permission from Van.
> ===
> These are my formal comments to AOS leadership from back in early July
> from my position as Acting Chair South American Classification Committee.
> They made me swear to keep these secret until the final decision was made.
> ===
> Comments to AOS Council from J. V. Remsen (Chair and founder, South
> American Classification Committee, and member since 1984 of North American
> Classification Committee)
>
> • Diversity and inclusion. The English Bird Names Committee report is
> antithetical to the AOS mission with respect to diversity and inclusion.
> AOS includes many people who either like eponyms for their own sake or
> would rather not meddle with them for the sake of stability.  These members
> have had little opportunity to express their views.  Currently, only 4.2 %
> of SACC English names are eponyms.  Many supporters of this tiny “market
> share” are afraid to speak out for fear of being called racists (as has
> already happened to Kevin Winker when he published his paper analyzing
> eponym comments in a Washington Post article.)  To anyone who saw that
> recent AOS-sponsored “symposium” (actually a hybrid pep rally X
> fundamentalist big-tent revival meeting) on bird names , it was clear that
> contrary views were not welcomed.
>
> • Broader impacts. I am acutely conscious of my White Privilege status
> that has helped my get where I am.  However, 

[cobirds] Large migrating flock

[Jeff Percell]

On my commute home (Boulder to Erie), about 15 minutes ago there was a
large flock of birds flying southwest over Kenosha Road. Unfortunately I
was in a line of cars behind a tractor and not able to stop. The birds were
relatively low, somewhere between 30-100' off the ground, but at a distance
I couldn't ID them as I was maybe a half mile +/- from them. I'd estimate
anywhere from 50,000 to upwards of a few hundred thousand birds. I wasn't
able to see them clearly enough, but anticipate they were some sort of
blackbirds. Entirely possible they stopped along 287 or perhaps continued
over Lafayette.

Curious if anyone else was out in the area and saw the birds to ID them or
get a better count.

Thanks,
Jeff Percell
Erie, CO

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Re: [cobirds] A Goldfinch challenge for David Leatherman

[Jeff Percell]

Is it possible it was cleaning it's bill? I observe various finches clean
their bill after eating some seeds, by whiping each side against a small
branch, alternating sides several times almost like one would run a knife
against a sharpener. Just one possibility of something it could be doing if
not going after a food source.

Thanks,
Jeff Percell
Erie, CO

On Tue, Jul 4, 2023, 9:04 AM dgulb...@gmail.com 
wrote:

> Why would a Goldfinch cling to a brick wall for a minute and a half?
> At 7 AM when I walked into my garden I was treated to a brilliant Amer.
> Goldfinch male who flew directly from my Bachelor Button patch to the
> side of my yellow-brick garage.  The brick has an extremely rough texture,
> so it was easy to cling to.  Although there were lots of "gnats" in the
> air,
> there weren't any near the wall, which is protected by a 3' overhang.  I
> expected
> the bird to immediately move on, but he lingered and lingered, making
> little
> pecking movements at the brick and perhaps at the mortar.  It came to mind
> that Amazon parrots peck up clay, but it seems unlikely that 80-year-old
> mortar
> would be digestible.  Maybe a small spider or spider eggs?  After the bird
> left,
> I examined the wall but could see absolutely nothing. If it was a small
> spider, how
> extraordinary that the bird saw it in the shade from 25 yards away.
> P.S. to gardeners: Bachelor Buttons are incredibly easy to grow, and they
> self-sow,
> so there's almost no work involved in having a patch.  Bees, including
> some native
> bees, love it, and American Goldfinches, Lesser Goldfinches, and House
> Finches
> will come to it from time to time for the developing seeds.
> David Gulbenkian, Crown Hill area, Jeffco
>
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Re: [cobirds] Bushtit -- black-eared Arapahoe Co.

[Jeff Percell]

I saw one last fall at Waneka Lake in Boulder County. This link should take
you to the subspecies map in eBird. You likely need to click something like
"search all species" to add it to your list. Looks like there are only a
handful of reports in Boulder County and one near Durango.

https://ebird.org/map/bkebus?neg=true=false=false=Z=false=false=1-12=1=12=all=1900=2023

Thanks,
Jeff Percell
Erie, CO

On Sun, Jul 2, 2023, 4:12 PM Mary Kay Waddington 
wrote:

> Had a melanotus (black-eared) bushtit today.  I don't know how rare these
> are, but this is the first one I've seen in Colorado.  eBird doesn't have
> that listed as a subspecies on its checklists so  it's hard to know how
> common they are.  But it was lovely to see.
>
> Mary Kay Waddington
>
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[cobirds] Glossy Ibis - Larimer County

[Jeff Percell]

I was in Windsor this morning and noticed there had been reports of a
Glossy Ibis between Windsor and Fort Collins since yesterday. Luckily I had
some time to investigate. It took me almost an hour to sort through all the
White-faced Ibises (70 of them, exact count), but I eventually found 2
Glossy Ibises and a 3rd candidate bird. They were in a flooded field
slurping up worms. Also a Willet, a couple of Lesser Yellowlegs, and
several Greater Yellowlegs were foraging amongst the Ibis. I'm not sure who
was the initial finder, but they have been seen by many and were attracting
several interested non-birders as the field is along a fairly busy road.

There was also a late juvenile Snow Goose in the back of the field near
several Canada Geese and Mallards.

Curious if anyone has any insight into the ID of the bird I have in my
checklist as a Glossy/White-faced? It lacked the white on the face, but
also didn't have the pale blue lines of the Glossy. It lacked the reddish
legs of the White-faced, but also didn't have as dark an eye as the Glossy.
Perhaps it's a hybrid?

https://ebird.org/checklist/S135609580

Good birding,
Jeff Percell
Erie, CO

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[cobirds] Nashville Warbler, Boulder County

[Jeff Percell]

I found a Nashville Warbler at KOA Lake in Boulder County when I
stopped there on my way home from work today. I was hoping to maybe
find some interesting warblers -- and was pleasantly surprised to have
at least something other than a Yellow-Rumped Warbler and it was a
special treat to see a life bird. I added several photos to the below
checklist, including ones that show the bird eating the organic matter
being pushed out by the budding leaves of the tree it was in. Thanks
to Dave Leatherman for the encouragement to share additional
information of what the interesting birds are doing and eating.

It looks like perhaps the same bird (or maybe a different one) was
reported further west along Boulder Creek earlier in the day as well.

https://ebird.org/checklist/S135337166

Thanks,
Jeff Percell
Erie, CO

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[cobirds] Red Crossbill, Weld County

[Jeff Percell]

I happen to be in Eaton (WELD COUNTY) today and decided to stop by the
cemetery, as I seem to often see interesting birds reported there. Glad I
did, as I found a male RED CROSSBILL singing/calling atop one of the tall
Evergreen trees near the flag pole. It flew to the North and I couldnt tell
if it stayed in the cemetery.

More frequently found along the mountains in Colorado, but the number of
reports along the plains is much more sparse. Only a few dozen Weld county
reports of the species in eBird. Guessing the weather may have pushed it
out this way from the front range.

I tried to capture audio, but not sure its intelligible with the wind. Not
a lifer for me today, as I saw a group in Boulder County earlier this year
for my 254th species in the state, though didn't have my camera with me
that time. I was able to catch a photo of this one - making 246 species
I've photo'd in the state.

https://ebird.org/checklist/S133859128

Good birding,
Jeff Percell
Erie, CO

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[cobirds] Red Crossbills BOCO

[Jeff Percell]

Currently a group of 8 Red Crossbills at the northwest corner of Flatiron
Parkway and Central Avenue on BOULDER COUNTY.

Thanks,
Jeff Percell

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[cobirds] Pacific Loon, Adams County

[Jeff Percell]

Hi All,
I happened to be in Brighton this afternoon and decided to stop by Ken 
Mitchell Open Space, expecting to see several Grebes, which there were. I 
was excited to see a Loon. As I haven't seen too many of those I needed to 
review photos compared to field guides, etc. I also saw that there has been 
a Common Loon reported there the last couple of weeks. However, my photos 
looked more like a Pacific Loon. After confirming with several on the ABA 
FB group, I updated my eBird report from loon sp. In looking at the eBird 
photos from the past couple of weeks at that location, I believe it's 
possibly the same Pacific Loon that was there today has been continuing for 
a few weeks. It was giving several good looks from the dock. 

Here's my checklist with photos uploaded:

https://ebird.org/checklist/S121191731

Thanks,
Jeff Percell
Erie, CO

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Re: [cobirds] Re: Snowy Owl/Weld

[Jeff Percell]

A bit of a slow reply, but I also checked CR 104 between 73 and 57 on 
Monday the 21st with no sign of the Snowy.. I was there late afternoon 
between 330 and 5. As Dave says it was very cold and very windy. I was 
lucky to find my first Lapland Longspur amongst hundreds of Horned Larks 
along CR 106 west of 77 though. 

Thanks,
Jeff Percell
Erie

On Thursday, February 24, 2022 at 10:55:48 AM UTC-7 Dave Leatherman wrote:

> For what it's worth, a friend of mine and I looked for it late afternoon 
> on 2/21.  Very windy and cold.  Did not see it.  Looked all along both 
> sides of 104 between 73 and 69.  Because of the conditions, we suspected if 
> still present, the bird was in a low spot, not sitting up on fence or 
> hill.  I understand others looked for it earlier in the day, also, to no 
> avail.  
>
> Dave Leatherman
> Fort Collins
> --
> *From:* cob...@googlegroups.com  on behalf of 
> Adrian Lakin 
> *Sent:* Thursday, February 24, 2022 9:31 AM
> *To:* Colorado Birds 
> *Subject:* [cobirds] Re: Snowy Owl/Weld 
>  
> Hi Gary, 
>
> I think I was the last to see it on 2/20. I watched it for about 90 
> minutes until I couldn't see it due to lack of light. I haven't seen any 
> further reports. It was 1/2 mile north of CR 104 north of my eBird 
> checklist location.
>
> Good luck if you go searching.
>
> Adrian Lakin,
> Mead, CO
>
> On Thursday, February 24, 2022 at 9:05:20 AM UTC-7 colorad...@yahoo.com 
> wrote:
>
> Hi all 
>
> Anyone see the Snowy Owl after the 2/20 sightings? Have not had a chance 
> to go look for it yet.
>
> Thanks, Gary Lefko, Nunn
> https://www.friendsofthepawneegrassland.org/
>
> https://www.inaturalist.org/projects/birds-and-more-of-the-pawnee-national-grassland
>
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Re: [cobirds] Pyrrhuloxia diet

[Jeff Percell]

Here is my checklist from yesterday afternoon. There is a photo of a House 
Finch who was in the same tree (someone had mentioned it was a hackberry 
though I'm terrible at tree ID, only slightly better at birds :D). As seen 
in the photo, the finch was at the top of the tree, eating the organic 
material of the tree - not sure if it is new budding material or old 
material from last year that is being pushed out. The Pyrrhuloxia stayed in 
the same spot the 20 minutes I was there, visible, but back in the branches 
a bit. It appeared to be resting, closing its eyes briefly off and on. It 
did one good stretch which is also captured in the photos.

You can also see from the photos that the Canada Goose has perhaps a more 
diverse diet.

https://ebird.org/checklist/S102603933

Thanks,
Jeff Percell
Erie, CO

On Sunday, February 13, 2022 at 9:44:39 PM UTC-7 Carol wrote:

> Thank you, David for the dietary information on the pyrrhuloxia. 
> Interesting as always.
>
> Carol Blackard
> carolblackard.com
> Sent from my iPhone
>
> On Feb 13, 2022, at 9:29 PM, DAVID A LEATHERMAN  wrote:
>
>  
>
> Carol, Linda and anyone else interested, I have cut and pasted below the 
> section on pyrrhuloxia diet from the "Birds of the World" account by Robert 
> Tweit and Christopher Thompson.
>
> Photos I have seen of the current Colorado bird show it at a black oil 
> sunflower feeder.  The fruits of hackberry are technically called drupes.  
> At this time of year the reddish pulp of each fruit is mostly 
> eroded/withered and what remains is a hard pit dangling from a thin stalk 
> (or resting on the ground).  I see more birds eating the fresh fruits in 
> late summer/autumn, probably for their pulp mostly, with the pits being 
> excreted.  However, I have seen a few birds like juncos and house finches 
> eating the fruits of hackberry in winter when they must be crunching the 
> rock-hard seeds.  Pyrrhuloxias certainly appear to have the beak to handle 
> hard seeds, so perhaps the association with hackberry is more than just 
> positioning for a feeder visit.  Verification welcome.
>
> Dave Leatherman
> Fort Collins
>
> Diet 
> Major Food Items 
>
> In Texas, wide variety of seeds, including bristle grass (*Setaria* spp.), 
> doveweed (*Croton texensis*), sandbur (*Cenchrus* spp.), panicum (
> *Panicum* spp.), sorghum, and pigweed (*Chenopodium album*), and fruits 
> of cactus (*Opuntia* spp.) and nightshade (*Solanum* spp.), as well as 
> grasshoppers, caterpillars (Lepidoptera), beetles (Coleoptera), stinkbugs 
> (Pentatomidae), and cicadas (Cicadidae). McAtee (McAtee 1908a 
> <https://birdsoftheworld.org/bow/species/pyrrhu/cur/references#REF17872>) 
> suggested that Pyrrhuloxia prefers grasshoppers to caterpillars to beetles 
> and eats much less fruit than Northern Cardinal does.
>
> In s. Arizona, prefers sunflower (*Helianthus* spp.) seeds and “peanut 
> butter suet” at feeders, although also eats other seeds and household 
> scraps (Anderson 1968 
> <https://birdsoftheworld.org/bow/species/pyrrhu/cur/references#REF47306>).
> Quantitative Analysis 
>
> From McAtee 1908a 
> <https://birdsoftheworld.org/bow/species/pyrrhu/cur/references#REF17872> . 
> In Aug and Sep, stomachs collected in Texas contained 71.2% vegetable 
> matter and 28.8% animal matter. Most of the vegetable matter (53.1% of 
> total) was “grass seeds,” primarily yellow foxtail (*Chaetecholoa glauca*) 
> and bur grass (*Cenchrus tribuloides*), which provide 43.6% of total 
> food. Other weed seeds included crabgrass (*Syntherisma* spp.), joint 
> grass (*Paspalum* spp.), and wire grass (*Eleusine indica*). Seeds of a 
> spurge (*Croton* sp.) made up 9.8% of diet. Of the remaining seeds, only 
> sorghum made measurable contribution (2.0%). Animal matter made up of 
> beetles (4.7%) (mainly weevils [3.4%], including cotton boll weevil 
> [*Anthononus 
> grandis*]), caterpillars (10.3%, including cotton worm [*Alabama 
> argillacea*]), and cotton cutworm (*Prodenia ornithogalli*). Grasshoppers 
> made up 11.5% and true bugs (Hemiptera) 1.5%.
>
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[cobirds] Deceased GHO

[Jeff Percell]

I found a deceased Great Horned Owl in the middle of 95th just South of 
Lookout in Boulder County. Must have recently been hit by a vehicle 
probably within the last hour. I moved it to the side of the road but 
wasn't sure if there is anyone to report it to.

Thanks,
Jeff Percell 
Erie, CO

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Re: [cobirds] Greater White-fronted Goose, Adams County

[Jeff Percell]

It appears that this goose may be a better candidate for a Graylag.
Apologies if I sent anyone on a wild goose chase.

Thanks,
Jeff Percell
Erie, CO

On Sun, Oct 24, 2021, 3:56 PM Jeff Percell  wrote:

> I spotted a (perhaps FOF-first of fall in Colorado based on eBird) Greater
> White-fronted Goose this afternoon at Ken Mitchell Park and Open Space in
> Adams County, alongside Jason Cole. It was on Cell No. 1, the body of water
> North of the park. It had it's head tucked, resting next to a Canada Goose,
> and I would have passed it over had it's bright orange legs not stood out
> so.
>
> Lots of Grebes amongst other usual suspects. Complete checklist here:
> https://ebird.org/checklist/S96658794
>
> Good birding,
> Jeff Percell
> Erie, CO
>
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[cobirds] Greater White-fronted Goose, Adams County

[Jeff Percell]

I spotted a (perhaps FOF-first of fall in Colorado based on eBird) Greater 
White-fronted Goose this afternoon at Ken Mitchell Park and Open Space in 
Adams County, alongside Jason Cole. It was on Cell No. 1, the body of water 
North of the park. It had it's head tucked, resting next to a Canada Goose, 
and I would have passed it over had it's bright orange legs not stood out 
so.

Lots of Grebes amongst other usual suspects. Complete checklist here:
https://ebird.org/checklist/S96658794

Good birding, 
Jeff Percell 
Erie, CO

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[cobirds] Re: History - Old bird checklists

[Jeff Percell]

You should add the checklists onto eBird, so that everyone can benefit from 
the data.

https://support.ebird.org/en/support/solutions/articles/48001158707-get-started-with-ebird

Thanks,
Jeff Percell
Erie, CO

On Sunday, September 5, 2021 at 4:58:36 PM UTC-6 ouz...@aol.com wrote:

> Does anyone know of a place that might have an interest in saving old bird 
> checklists? I have a packet several inches thick of everything from 
> Chatfield to Rock Creek to Durango to Bonny and I'm ready to give them away 
> or to toss them.
>
> Hugh Kingery
>

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[cobirds] Re: Black-Bellied Plover (not American Golden), SW Weld County

[Jeff Percell]

Plovers were not continuing this morning, though there was quite the group 
of shore birds at the same run-off spot including 170 Ring-billed Gull, 6 
Franklin's Gull, 2 California Gull, 1 Great Egret, 8 Snowy Egret, 9 Baird's 
Sandpiper, 11 Killdeer. Exciting as it's within walking distance from my 
house -- after birding for about 20 minutes, I noticed I was just over 900 
steps on the day. Ha!

My full checklist from this morning:
https://ebird.org/checklist/S93578322

Thanks,
Jeff

On Sunday, August 22, 2021 at 7:16:09 AM UTC-6 Jeff Percell wrote:

> Updating the ID on my previous post, to correctly reflect they were 
> Black-Bellied Plovers, not American Golden Plovers, after reviewing field 
> guides and seeing they had white under tail coverts. Still -- a very cool, 
> unexpected lifer on my way to dinner this evening.
>
> Checklist has been updated with actual media, rather than back of camera 
> shots.
>
> https://ebird.org/checklist/S93561296
>
> Thanks,
> Jeff Percell
> Erie, Colorado
>

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[cobirds] Black-Bellied Plover (not American Golden), SW Weld County

[Jeff Percell]

Updating the ID on my previous post, to correctly reflect they were 
Black-Bellied Plovers, not American Golden Plovers, after reviewing field 
guides and seeing they had white under tail coverts. Still -- a very cool, 
unexpected lifer on my way to dinner this evening.

Checklist has been updated with actual media, rather than back of camera 
shots.

https://ebird.org/checklist/S93561296

Thanks,
Jeff Percell
Erie, Colorado

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[cobirds] American Golden Plovers SW Weld Co

[Jeff Percell]

On my way to dinner spotted 3 American Golden Plovers in Erie just after 7 
pm (Weld County side). Checklist has back of camera photos for now. Don't 
believe these are black-bellied but either way exciting birds and lifers 
for me.

They were in a field with 250 gulls. This field has had gulls on and off 
the last few weeks following rain. The gulls typically leave by 730 am or 
so. I observe from side of road, while there is a road through the field, 
I'm pretty sure it is a private oil field road.

https://ebird.org/checklist/S93561296

Thanks,
Jeff Percell
Erie, CO

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[cobirds] Re: Sound ID

[Jeff Percell]

I've been using the Merlin Bird Sound app since it was first released in 
beta. I've found that while it's amazing, I've also seen several false IDs, 
particularly when there is some background noise such as wind. 

You also might try to upload the audio here, which is the API behind Bird 
NET, which is an app I was using prior to Merlin (which I've now switched 
over to Merlin because it's a lot more user friendly).

https://birdnet.cornell.edu/api/

Also, you might upload your sound somewhere that makes it a little easier 
for others to view, such as an eBird checklist (which as the ID is in 
question, upload it as Passerine sp. initially). 

Thanks,
Jeff Percell
Weld County

On Friday, July 9, 2021 at 7:52:32 PM UTC-6 grb...@gmail.com wrote:

> COBirders,
>
> Yesterday, I participated in David Hallock’s Indian Peaks Breeding Bird 
> Count. My “area” was the Woodland Lake Trail (accessed from Hessie 
> Trailhead, near Nederland). I kept hearing a bird that I couldn’t quite 
> identify. It didn’t sound quite like a Chipping Sparrow or Dark-eyed Junco, 
> so I thought I’d try the new Merlin Bird Sound app (which is amazing, I 
> must say). Without hesitation, or providing any other suggestions, it 
> identified the sound/bird as a Pine Warbler. Since eBird designates that 
> bird as “rare”, I don’t want to say that that’s what it was, solely on the 
> basis of the call.
>
> I have a recording that I’m happy to share, if someone would like to help 
> me (and Merlin) make the right (pardon the pun) “call”. 
>
> Thanks so much!
>
> Gary Brower
> Unincorporated Arapahoe County

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[cobirds] Re: RMNP Entrance Question

[Jeff Percell]

I went on Wednesday and was able to get timed-entry passes (as we needed 2 
because our group had 2 vehicles) for the Bear Lake road. The way the 
reservation system works is 75% of timed entry passes are released for 
purchase a month in advance,  and 25% the day before at 5 pm. We got our 
passes exactly at 5 pm, with 2 different recreation.gov accounts, as they 
are limit 1 per account. By 5:05 pm the passes were largely sold out for 
the day. As Donna mentioned if you are entering the park before 5 am for 
Bear Lake or before 9 am for the rest of the park, you don't need the 
timed-entry pass, just regular fees.

It did seem like quite a bit of a hassle, especially considering we were a 
group of 2 vehicles. However, the park was quite enjoyable without a crazy 
amount of vehicles and cars everywhere.

Thanka,
Jeff

On Thursday, June 10, 2021 at 8:06:49 AM UTC-6 Donna Stumpp wrote:

> You can actually enter the park before 9:00am any day and enjoy any part 
> of the park outside of the Bear Lake Road area. You do still have to pay 
> the usual fees or have an America the Beautiful pass. We did this on June 
> 3. I just looked and Old Fall River Road west of Endovalley is still 
> closed, but Trail Ridge Road is open.
>
> Honestly, it was not terribly difficult to get a ticket for the Bear Lake 
> Road area if you login right at 5:00pm the night before on recreation.gov, 
> and when we went it was pretty quiet outside of the upper Bear Lake 
> Trailheads which was a pleasant surprise.
>
> Good Luck!
> Donna Stumpp
> Jefferson County, CO
>
> On Thursday, June 10, 2021 at 6:48:05 AM UTC-6 jag...@gmail.com wrote:
>
>> Hello all, 
>>
>> I was hoping to attempt to see the Ptarmigan that have been reported the 
>> last few weeks at RMNP. That said, we will be entering the park early to 
>> get there in time. I know there are new restrictions on timed entry. It 
>> looks like 9am is the earliest general park time, but 5am is the earliest 
>> for Bear Lake. If I purchase a day pass, can I still enter the park at 5am 
>> without a timed entry reservation? Has anyone had experience with this? 
>> Appreciate any insight.
>>
>>  
>>
>> Jacqui 
>>
>> Denver, CO
>>
>

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[cobirds] Sora, Boulder County

[Jeff Percell]

Hi All,

While not a "rare" bird according to eBird, I thought it might be 
noteworthy to share that I found a Sora this evening at Jim Hamm Nature 
Area in Boulder County (Longmont).

I'm not that far North in Longmont too terribly frequently, but had just 
received my 2nd dose of vaccine at the King Soopers down the street. Though 
it was snowing a little heavier perhaps than it appeared to be during the 
Rockies game this afternoon, I figured if they can play baseball in it, I 
can bird. So I stopped at Jim Hamm Nature Area for 20 minutes which quickly 
turned into an hour and 12 minutes. 

As it was snowing I had my camera with me, but cased as I walked up to the 
marsh. I was surprised to see a Sora wading, just South of the pier near a 
large fallen cottonwood. As I marveled at it's bright yellow bill, I was 
far too slow pulling out my camera, as it quickly ducked into the thick 
grasses, not to be seen again. I was sad to not capture a photo, but 
excited to add a new bird to my life list. 

As I scanned the pond from the platform, I quickly found another lifer for 
me, one of the Black-crowned Night-Herons that have been reported there for 
a few days. Other birds of note were the handful of Great Blue Herons, 
American White Pelicans, Sharp-shinned Hawk, pair of Lincoln's Sparrows 
(near the path, just North of the pier), and the several Yellow-headed 
Blackbirds that arrived as the snow died down. 

Below is a full list, along with a link to my eBird list (which has a few 
not very amazing photos given the weather). I also included a link to the 
Jim Hamm Nature Area write up on the Colorado Birding Trail site.

Stay well & good birding.
-Jeff

1 Northern Shoveler
8 Mallard
2 Pied-billed Grebe
2 Eurasian Collard-Dove
1 Sora
1 American Coot
1 Double-crested Cormorant
8 American White Pelican
5 Great Blue Heron
1 Black-crowned Night-Heron
1 Sharp-shinned Hawk
1 Belted Kingfisher
2 Northern Flicker
3 European Starling
2 House Finch
2 Lincoln's Sparrow
5 Yellow-headed Blackbird
8 Red-winged Blackbird
6 Common Grackle
1 Great-tailed Grackle

https://ebird.org/checklist/S86064240
https://coloradobirdingtrail.com/site/jim-hamm-nature-area/

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Re: [cobirds] NO continuing Long-billed Curlews - SE of Longmont

[Jeff Percell]

I was there about 20 minutes ago and counted 11 Long-billed Curlews. A much 
smaller group, best observed from Pipit Rd, though not really a spot to 
'pull over' with the mud. They were tough to see without glass and you 
certainly need to know where to be looking (South of the road, just West of 
the large sod sprinkler)  

Thanks,
Jeff

On Friday, April 16, 2021 at 12:59:36 PM UTC-6 u5b2...@gmail.com wrote:

> I could not find any. Searched Pipit Road, which turns into Pike, from 119 
> to east of County Line Road, and also searched north and south on County 
> Line Road. 
> Hopefully someone else will re-find them.
> A very nice selection of raptors, however!
> Susan Rosine
> Brighton
>
> On Fri, Apr 16, 2021, 9:05 AM Raymond Davis  wrote:
>
>> Counted 83, probably 100 +, about 200 yds south of Pipit Rd, just east of 
>> County Line Rd.
>>
>> davis
>>
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Re: [cobirds] Boulder White Goose ID

[Jeff Percell]

Hi David,

I just now saw your post, but I went out yesterday and spent some time 
observing from both Prince Lake No 2 and Erie Lake (Reservoir according to 
eBird), as this (presumably same) bird that has been previously reported a 
few times this week from Erie Lake. 

I was able to get better views from the Erie Lake side, but still not great 
photos. I posted several to my checklists below. I believe it to be a 
Ross's Goose based on the short stubby bill, completely lacking a grin 
patch. To me it appeared smaller than the nearby Canadas, which there was 
also some Cacklers on the lake as well.

I'd certainly appreciate any feedback on the ID, as this would be my first 
Ross's Goose. 

My checklists:
https://ebird.org/checklist/S84088989
https://ebird.org/checklist/S84083104

Other checklists from 3/20 and 3/23:
https://ebird.org/checklist/S83777625
https://ebird.org/checklist/S83968146

Thanks,
Jeff Percell
Erie, CO
On Thursday, March 25, 2021 at 2:17:12 PM UTC-6 David Waltman wrote:

> The bill is smaller than on a Snow Goose which I think comes from part 
> Ross’s.  Also, the base of the bill is almost straight like a Ross’s 
> instead of an arc like a Snow. 
> David 
>
> On 03/25/2021 12:59 PM 'Deborah Carstensen' via Colorado Birds <
> cob...@googlegroups.com> wrote: 
>   
>   
> What are the attributes cause you to think it’s part Ross’s goose? Thanks 
> for the thoughts on that.   
>
>
> Deb Carstensen, Arapahoe county  
> Sent from my iPhone 
>
> On Mar 25, 2021, at 8:14 AM, DAVID J WALTMAN  wrote: 
>
> Yesterday, 24 March, I photographed an interesting white goose at Prince 
> Lake #2.  It was roughly the size of nearby Canada Geese, too big for a 
> Ross's Goose.  The bill was too large for Ross's and did not have the 
> perfectly straight vertical base of a Ross's.  The head was not perfectly 
> round like a Ross's.  The bill appeared too small for a Canada Goose and 
> did not have a significant grin patch.  In summary, the head features were 
> intermediate between Ross's and Snow.  I conclude that this is a Ross's 
> Goose x Snow Goose hybrid.  See attached photo. 
>
>  
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[cobirds] Northern Mockingbird, Adams

[Jeff Percell]

I spotted a Northern Mockingbird at McKay lake in Adams County just before 
noon. Not sure if it is that noteworthy to share on a list like this as I'm 
fairly new to the group, but it looks like it's fairly rare this far North, 
this time of year.

Here's a link to the checklist. The bird was on the Southeast notch of the 
lake where the houses are closest to the lake. The bird flew from a cluster 
of trees on the lake across the trail to a backyard that had some Russian 
Olive trees in it.

https://ebird.org/checklist/S79499935

Happy birding,
Jeff

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