[cobirds] Colorado Rare Bird Alert, 18 May 2015

[Joyce Takamine]

Compiler:  Joyce Takamine
Date: May 18, 2015

This is the Rare Bird Alert, Monday, May 18 sponsored by Denver Field
Ornithologists and the Rocky Mountain Bird Observatory.

Highlight species include: (* indicates new information on this species).

Broad-winged Hawk (Bent, Elbert, El Paso, Fremont, Kit Carson, *Larimer,
Prowers, *Sedgwick, Weld)
Snowy Plover (Otero)
Mountain Plover (El Paso (CB))
Whimbrel (Elbert, Weld)
HUDSONIAN GODWIT (Bent)
RED KNOT (Bent)
White-rumped Sandpiper (Otero, Weld)
Lesser Black-backed Gull (Larimer)
Least Tern (Bent)
Caspian Tern (*Morgan, Weld)
COMMON GROUND-DOVE (Delta)
LESSER NIGHTHAWK (*Morgan, Weld)
Red-headed Woodpecker (El Paso (CB), Prowers, Pueblo, Pueblo (CB), Weld,
Yuma)
Red-bellied Woodpecker (Prowers)
ALDER FLYCATCHER (*Yuma)
Least Flycatcher (Douglas, El Paso, Morgan, Pueblo (CB))
Gray Flycatcher (Arapahoe, Boulder, Denver, Douglas, El Paso, Jefferson,
Larimer, Logan, Pueblo, Weld)
Black Phoebe (Boulder,  *Mesa, Pueblo)
Eastern Phoebe (Boulder, Douglas, Fremont, Jefferson)
Scissor-tailed Flycatcher (Arapahoe, Baca, El Paso)
Blue-headed Vireo (El Paso)
Yellow-throated Vireo (Jefferson, Prowers, *Weld)
Rock Wren (Adams, Douglas, Elbert, Pueblo)
Bewick's Wren (Boulder)
Gray-checked Thrush (El Paso (CB), Weld)
Curve-billed Thrasher (Delta, Pueblo)
Lapland Longspur  (Prowers)
McCown's Longspur (Elbert, Larimer, Lincoln)
Worm-eating Warbler (El Paso, *Washington)
Golden-winged Warbler (Fremont, Kit Carson)
Blue-winged Warbler (*Jefferson)
Prothonotary Warbler (Prowers)
LUCY'S WARBLER (Weld)
MOURNING WARBLER (Elbert, Prowers)
CAPE MAY WARBLER  (Bent)
Chestnut-sided Warbler (*Larimer)
Palm Warbler (*Morgan)
Canyon Towhee (Bent, Fremont)
Field Sparrow (Elbert)
Fox Sparrow (Weld)
Summer Tanager (Bent, *El Paso, Phillips, Rio Grande)
Northern Cardinal (Prowers)
Painted  Bunting (Baca, Elbert)
Baltimore Oriole (Bent, Boulder, *El Paso)
PURPLE FINCH (Lincoln)

ADAMS COUNTY:
--A Rock Wren was reported by Candice Johnson inside the Bison Enclosure at
Rocky Mountain Arsenal on May 10

ARAPAHOE COUNTY:
--A Scissor-tailed Flycatcher was reported by Steve Kennedy at Cherry Creek
SP on the south side near 12 mile creek on May 5.
On May 7, Gene Rutherford reported Scissor-tailed Flycatcher by the N
entrance to Lake Loop before 9 am.  On May 8, Bob Brown
reported Scissor-tailed Flycatcher flying from Lake Loop.  The Scissor-tail
was reported by several other birders at Cherry Creek
later in the day on May 8.  On May 9, Mary Driscoll reported that the
Scissor-tailed Flycatcher was SE of Lake Loop in the morning and others
reported it at Cherry Creek SP during the day.  On May 10, Kirkpatick
reported Scissor-tailed Flycatcher at Cherry Creek SP on Road to gun club
shooting range at 1030.
--A Scissor-tailed Flycatcher was reported by Scott Manwaring east of
Bellview Pond on May 12.
--A Gray Flycatcher was reported by Alec Hopping at South Platte Park,
Cooley Lake (guided access only) on May 9.
--An Eastern Phoebe was reported by Gene Rutherford on Mary Carter Greenway
Trail in Littleton on May 10.
--A Gray Flycatcher was reorted by Alec Hopping at Cherry Creek SP  on May
12.

BACA COUNTY:
--A Scissor-tailed Flycatcher was reported by Jane Stulp in Walsh WTP on
May 5.  A Scissor-tailed Flycatcher continues
to be seen at the Thompson residence in Walsh on May 6.  If you wish to try
to see it contact Marsha Thompson at marshat AT centurytel.net to make
arrangements.  A m Scissor-tailed Flycatcher was reported by Percival in
Walsh on May 10.
--A pair of Painted Buntings was reported by Kaempfer at Picture Canyon on
May 9.

BENT COUNTY:
--A HUDSONIAN GODWIT was reported by Lance Verhoeff in flooded fields
adjacent to CR 26.5 and CR JJ on May 6.  Please be aware the the fields and
farm roads are private property and no trespassing will be tolerated.  On
May 7, HUDSONIAN GODWIT was
reported by Drummond in flooded fields adjacent to CR 26.5 and CR JJ.  On
May 8, Austin Hess reported that the HUDSONIAN GODWIT continues in Bent
County.  On May 9, Lisa Edwards reported that the HUDSONIAN GODWIT
continues in Bent County.
--On May 10, Percival reported 2 Broad-winged Hawks at Melody Tempel Grove.
--At Hasty Campground on May 9, Kara Carragher and Lisa Edwards reported f
CAPE MAY WARBLER, molting m Summer Tanager, and f Baltimore Oriole.  At
Hasty Campground on May 9, Komar reported  a singing Canyon Towhee.  At
Hasty CG on May 11, John Drummond reported f CAPE MAY WARBLER.
--At John Martin Reservoir on May 9, Komar reported basic plumaged RED KNOT.
--On May 9, 2 Least Terns and a Summer Tanager were reported at Lake Hasty
by Andrew Bankert.

BOULDER COUNTY:
--On May 10, Bill Schmoker reported Black and Eastern Phoebe at 75th St and
Boulder Creek.
--A Gary Flycatcher was reported by David Dowell at Ryssby Church on N 63rd
between Prospect and Nelson on May 11.
--A Bewick's Wren was reported by Ted Floyd at the SW corner of Teller Lake
#5 on May 16.
--A Baltimore Oriole was reported by Kent Forward at 

[cobirds] Re: Welchester Yellow-throated Vireos

[Norm Erthal]

I am certainly not discounting that there are three yellow-throated vireos 
because I did not see them. The main reason is that separating males from 
females is not really possible. To suggest that a young bird can be 
identified separately from adults stretches this even further. I have 
looked at hundreds of photos of yellow-throated vireos and have not found a 
single one separating males from females. The same goes for every field 
guide I possess. 
Norm Erthal
Arvada, CO

On Saturday, May 16, 2015 at 9:39:28 AM UTC-6, Norm Erthal wrote:

> The three yellow-throated vireos at Welchester are very unlikely for 
> several reasons. First, 3 together in one location in Colorado would be 
> unprecedented. This does mean it cannot happen, but great care should be 
> taken to be absolutely positive about the identification. Yellow-throated 
> vireos along with most other vireos are not sexually dimorphic. This means 
> males and females have the same plumage and are not separable in the field. 
> Young birds attain full adult plumage very early in their life. Finally 
> most passerines have the adult male generally migrate south before the 
> females and young and return north in the spring prior to females to 
> establish territories. Females are next to leave followed finally by young 
> birds. It would be nearly unfathomable for adult birds and first year birds 
> to reestablish contact on the wintering grounds and then return north as a 
> family group. Without photos of each of the three birds, this sighting 
> would not pass muster with experienced birders.
>
> Norm Erthal
> Arvada, CO
>

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[cobirds] Upland Sandpiper, Greenlee Preserve, Boulder County, 5/18

[Ted Floyd]

Hello, Birders.

A few minutes ago I heard and then actually saw (!) an *upland sandpiper* 
migrating above Greenlee Preserve. Bearing slightly east of north. In 
you're in the eastern part of Longmont, go listen (*quiddy quit!*) for it 
right now. Should be there in a few minutes...

Ted Floyd
Lafayette, Boulder County

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Re: [cobirds] Upland Sandpiper, Greenlee Preserve, Boulder County, 5/18

[Sean Walters]

Ted,

I took your advice and at 9:16 I had an UPLAND SANDPIPER flying over here close 
to the intersection of Taft and 287. Not that much east of your location. Also, 
I don't know when you had yours, but I'm at least 25 miles from your area and 
that bird would have had to been moving fast. Is it the perfect Uppy migration 
conditions right now perhaps?

Sean Walters
Loveland, CO


> On May 18, 2015, at 8:59 AM, Ted Floyd  wrote:
> 
> Hello, Birders.
> 
> A few minutes ago I heard and then actually saw (!) an upland sandpiper 
> migrating above Greenlee Preserve. Bearing slightly east of north. In you're 
> in the eastern part of Longmont, go listen (quiddy quit!) for it right now. 
> Should be there in a few minutes...
> 
> Ted Floyd
> Lafayette, Boulder County
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[cobirds] Spring count, Rocky Mtn Arsenal NWR

['Hugh Kingery' via Colorado Birds]

A quick note (I haven't compiled the tally yet).

A fallout of Bullock's Orioles -- 7 in one tree; 49 altogether! Breathtaking. 

Lewis's Woodpecker moving north along a power line (on a non-public road). 

 

 

Hugh Kingery 
  Franktown, CO
  

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[cobirds] Yard Bird #50. Virginia's warbler - Longmont

[Dave Hyde]

Saturday morning I spotted a Virginia's warbler from my yard in the middle of 
Longmont! Bird #50 in 2 1/2 years. Love this rainy weather - Dave Hyde/Longmont 
near the cemetary   

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Re: [cobirds] Upland Sandpiper, Greenlee Preserve, Boulder County, 5/18

[Ted Floyd]

That's cool, Sean. If it was the same bird, then that would be a cruising 
speed of a bit more than 60 mph--seems a bit fast, but note that migrants 
on passage this morning have a tail wind out of the southeast.

Also at Greenlee Preserve this morning: *eastern warbling vireo, least 
flycatcher, gray catbird,* and an interesting *wood-pewee.* Acoustic 
analysis of the wood-pewee's calls will have to wait a bit. Anyhow, there's 
stuff out there, and with a bit of an easterly, or, at least Midwestern, 
flavor.

Ted Floyd
Lafayette, Boulder County

On Monday, May 18, 2015 at 9:49:35 AM UTC-6, Sean Walters wrote:
>
> Ted,
>
> I took your advice and at 9:16 I had an UPLAND SANDPIPER flying over here 
> close to the intersection of Taft and 287. Not that much east of your 
> location. Also, I don't know when you had yours, but I'm at least 25 miles 
> from your area and that bird would have had to been moving *fast*. Is it 
> the perfect Uppy migration conditions right now perhaps?
>
> Sean Walters
> Loveland, CO
>
>
> On May 18, 2015, at 8:59 AM, Ted Floyd > 
> wrote:
>
> Hello, Birders.
>
> A few minutes ago I heard and then actually saw (!) an *upland sandpiper* 
> migrating above Greenlee Preserve. Bearing slightly east of north. In 
> you're in the eastern part of Longmont, go listen (*quiddy quit!*) for it 
> right now. Should be there in a few minutes...
>
> Ted Floyd
> Lafayette, Boulder County
>
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[cobirds] Another Round of Red-necked Phalarope/Crom Lake

[The "Nunn Guy"]

Hi all

Two (new) Red-necked Phalarope at Crom Lake.

Thanks Gary Lefko, Nunn
http://coloradobirder.ning.com/
Mobile:  http://coloradobirder.ning.com/m

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[cobirds] Crow Valley (Weld)

[sheflew]

Cobirders,

Crow Valley in Weld Cty is very birdie with good turnover while I birdied this 
morning. The highlights include;

Great Crested Flycatcher
Yellow-throated Vireo
Northern Parula
Gray-cheeked Thrush
Swainson's Thrush - 40+
Blue-gray Gnatcatcher -20+

50 species. Bring your boots!

Sue Riffe
Lyons,CO

Sent from my iPhone

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[cobirds] Clear Springs Ranch, El Paso Co, Monday

[Steven Brown]

Hi COBirders,

I was asked the other day to elaborate about seeing the “rough-wing” on a 
Northern Rough-winged Swallow. This is one of those species names that only 
becomes obvious when you have the bird in the hand. (fortunately captured alive 
- and not shot and stuffed).  On the outer edge of the last primary flight 
feather (P9), the tiny barbs show a “serration” pattern, that also 
distinguishes age and sex. On the adult male the fine comb-tooth barbs (hence 
“rough-wing”) angle downwards, and in the adult female, they angle upwards. On 
juv males the barbs point about straight-out, and the juv female they are 
hardly there at all. Why, or what effect this might have on drag in flight I 
have no idea, but the the wing under magnification surely shows it’s “rough” 
edge. ( Peter Pyle, “Identification Guide to North American Birds, Part 1”, 
Figure 208, page 326.)


Today was cool and drizzly, with a low ceiling, and slight breeze, so miserable 
for me, but GREAT for migration! I had many waves of mixed migrants come 
through and passing overhead. AIt was a real good day of banding for a 
“corridor” station rather than a migrant trap.  Biggest numbers were of Yellow 
Warbler (12) and Com Yellowthroat (9). Probably the best birds were a Least 
Flycatcher, and my 5th N Waterthrush this spring.  Also seen - Olive-sided 
Flycatcher, and the Virginia’s Rail continues to call nearby.
 
Banded today:
Dusky Flycatcher 2
Least Flycatcher
Warbling Vireo 3
House Wren
Gray Catbird
Swainson’s Thrush 2 (FOS)
N Waterthrush
Yellow Warbler 12
Orange-crowned Warbler
Com Yellowthroat 9
Myrtle Yellow-rumped Warbler
MacGillivray’s Warbler
Green-tailed Towhee
Lincoln’s Sparrow 2
Red-winged Blackbird 2
Brown-headed Cowbird

Total birds today, 41 - My best spring day ever at CSR, also my last day 
banding at CSR this spring. :(

Happy Migration,
Steve Brown
Colorado Springs



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[cobirds] Good Action at Home Lake SWA

[cougar]

I was surprised and delighted to see a Green Heron on the canal north of Home 
Lake (Rio Grande County). It is a rare migrant through this area. Have not seen 
one here in many years. 

The nearby willow trees along the lake were alive with Orange-crowned, Yellow, 
YR, and Virginia’s Warblers, Warbling Vireo, and Western Wood-pewee. Lincoln’s 
Sparrows were quite apparent as well. Lots to see and even as I type this, I am 
just anxious to get back out there. Ever have that feeling anyone

John Rawinski
Monte Vista, CO

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Re: [cobirds] Blue-winged Warbler, Jefferson Co

[Scott Somershoe]

I easily relocated the Blue-winged Warbler this afternoon at Welchester
Tree Park (Jeff Co) at the previously noted location on the northeast side
of the park, however he was singing a mostly Golden-winged Warbler song the
entire 15 min I watched him (or was in range of him).  He only sang the
last 3 notes of the "Bee buzz buzz buzz" of the Golden-winged Warbler
song.  Although he is phenotypically a Blue-winged, I'm sure he has some
Golden-winged genes in him.  The species regularly hybridize where they
overlap and I've seen both species sing a spot on song of the other species
in Tennessee (where both breed and there is occasional hybridization).
I've mostly seen Golden-winged sing a perfect Blue-winged song and have
only seen 1 or 2 Blue-winged's sing a Golden-winged song.  He's still a
Blue-winged, but I doubt he's a pure bird.  I need to go back and get a
recording of this guy!

Cheers,
Scott Somershoe
Littleton, CO

On Sat, May 16, 2015 at 3:36 PM, Peter Gent  wrote:

> All,
>
> Having found no rare warblers in Boulder this morning, Joanie Kleypas and
> I wandered down to the Welchester Tree Park off 8th Avenue in Jefferson
> County. Around 9:15 we wended our way to the east end of the park by the
> creek.  There we found a lady looking at the singing male Blue-winged
> Warbler.  It was near the very top of a 10' high young tree, about 50 yards
> east of the boundary fence and about 20 yards north of the creek.  It
> seemed to like this perch and sang there for a while.
>
> Cheers,  Peter Gent.
> Boulder CO.
>
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[cobirds] Eastern Meadowlark, Boulder Co.

[Paula Hansley]

While doing a waterfowl survey at Hodgson-Harris Reservoir near Flatirons 
Crossing yesterday morning, I heard the beautiful song of the Eastern 
Meadowlark, which I grew up with!  It was near the dam. Later, I heard a 
distant Western Meadowlark across highway 36. 

This is a lake surrounded by Boulder open space. You have to park outside a 
fence and walk through a gate put up by a condo complex to see the lake and 
area around it. 

Paula Hansley
Louisville

Sent from my iPhone

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Re: [cobirds] Blue-winged Warbler, Jefferson Co

[Eric DeFonso]

Hi Scott,

I'm curious - how does the song you heard compare to this recording:

http://www.xeno-canto.org/205952

I made this recording in the exact same area as you were today, just last
year around this time. If it sounds like this, it could very well be the
same individual. Read the additional notes at the link for more info on the
song type and what someone who studies this bird in depth had to say about
it. In sum, the bird could certainly be genotypically pure (to the extent
that we define such things) and yet sing a song like this. It's really hard
to know just from hearing and seeing the bird in the field, apparently! In
any case, thanks for commenting on what you heard at the park today.

Thanks,
Eric


On Mon, May 18, 2015 at 3:51 PM, Scott Somershoe 
wrote:

> I easily relocated the Blue-winged Warbler this afternoon at Welchester
> Tree Park (Jeff Co) at the previously noted location on the northeast side
> of the park, however he was singing a mostly Golden-winged Warbler song the
> entire 15 min I watched him (or was in range of him).  He only sang the
> last 3 notes of the "Bee buzz buzz buzz" of the Golden-winged Warbler
> song.  Although he is phenotypically a Blue-winged, I'm sure he has some
> Golden-winged genes in him.  The species regularly hybridize where they
> overlap and I've seen both species sing a spot on song of the other species
> in Tennessee (where both breed and there is occasional hybridization).
> I've mostly seen Golden-winged sing a perfect Blue-winged song and have
> only seen 1 or 2 Blue-winged's sing a Golden-winged song.  He's still a
> Blue-winged, but I doubt he's a pure bird.  I need to go back and get a
> recording of this guy!
>
> Cheers,
> Scott Somershoe
> Littleton, CO
>
>
> --
Eric DeFonso
Boulder, CO

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Re: [cobirds] Blue-winged Warbler, Jefferson Co

[David Suddjian]

I was at the park today, too, and heard the bird singing. Only mediocre
views, but nice listening experience. The songs I heard were very close to
what is on Eric's recording.

David Suddjian
Littleton, CO

On Mon, May 18, 2015 at 9:28 PM, Eric DeFonso  wrote:

> Hi Scott,
>
> I'm curious - how does the song you heard compare to this recording:
>
> http://www.xeno-canto.org/205952
>
> I made this recording in the exact same area as you were today, just last
> year around this time. If it sounds like this, it could very well be the
> same individual. Read the additional notes at the link for more info on the
> song type and what someone who studies this bird in depth had to say about
> it. In sum, the bird could certainly be genotypically pure (to the extent
> that we define such things) and yet sing a song like this. It's really hard
> to know just from hearing and seeing the bird in the field, apparently! In
> any case, thanks for commenting on what you heard at the park today.
>
> Thanks,
> Eric
>
>
> On Mon, May 18, 2015 at 3:51 PM, Scott Somershoe 
> wrote:
>
>> I easily relocated the Blue-winged Warbler this afternoon at Welchester
>> Tree Park (Jeff Co) at the previously noted location on the northeast side
>> of the park, however he was singing a mostly Golden-winged Warbler song the
>> entire 15 min I watched him (or was in range of him).  He only sang the
>> last 3 notes of the "Bee buzz buzz buzz" of the Golden-winged Warbler
>> song.  Although he is phenotypically a Blue-winged, I'm sure he has some
>> Golden-winged genes in him.  The species regularly hybridize where they
>> overlap and I've seen both species sing a spot on song of the other species
>> in Tennessee (where both breed and there is occasional hybridization).
>> I've mostly seen Golden-winged sing a perfect Blue-winged song and have
>> only seen 1 or 2 Blue-winged's sing a Golden-winged song.  He's still a
>> Blue-winged, but I doubt he's a pure bird.  I need to go back and get a
>> recording of this guy!
>>
>> Cheers,
>> Scott Somershoe
>> Littleton, CO
>>
>>
>> --
> Eric DeFonso
> Boulder, CO
>
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[cobirds] Oriole sweet tooth, Boulder County

[Tom Wilberding]

Hello birders,

At Walden Ponds this afternoon in a light rain--it’s common knowledge that 
Baltimore Orioles like grape jelly, so I shouldn't have been surprised to 
see a Bullock’s oriole chomping on the blossoms of a hawthorn shrub. In the 
same shrub was a fat cedar waxwing, both oblivious to my snooping, as long 
as I didn't try to steal some of their blooms. The hawthorn blossoms 
smelled unpleasant, but must have nectar to attract these birds.

Also at Walden, yellow-rumped and yellow warblers, four American white 
pelicans, spotted sandpiper, American avocet, tons of swallows, lots of 
house wrens, a calling pied-billed grebe, and of course the huge chorus of 
red-winged blackbirds who own the joint.

A few rainy pics: http://twilberding.zenfolio.com/p732899274

Tom Wilberding
Boulder County

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