[cobirds] Colorado RBA, Wednesday September 28, 2011
compiler: Joyce Takamine Date: September 28, 2011 e-mail: rba@cfo-link phone: 303-659-8750 This is the Colorado Rare Bird Alert for Wednesday, September 28, 2011 updated at 5:00 am, sponsored by Denver Field Ornithologists and the Rocky Mountain Bird Observatory. If you are phoning in a message, you can skip the recording by pressing the star key (*) on you phone at any time. Please leave your name, phone number, detailed directions, including county and dates for each sighting. It would be helpful if you would spell your last name. Highlight species include: (* denotes that there is new information on this species in this report) Green Heron (El Paso) Broad-winged Hawk (Larimer, Washington, Weld) American Golden-Plover (Weld) Sabine's Gull (Boulder, Douglas/Jefferson) Caspian Tern (Larimer) American Three-toed Woodpecker (Boulder) Cassin's Kingbird (Adams) SCISSOR-TAILED FLYCATCHER (Otero) PHILADELPHIA VIREO (Adams) Tennessee Warbler (Adams, El Paso, Washington) Nashville Warbler (Larimer, Washington) Magnolia Warbler (El Paso) Black-throated Blue Warbler (Adams) Palm Warbler (Pueblo) Blackpoll Warbler (Washington) Black-and-white Warbler ( Washington) Prothonotary Warbler (Larimer) Ovenbird (El Paso) Northern Waterthrush (El Paso, Pueblo) CANADA WARBLER (Washington) White-throated Sparrow (Larimer, Washington, Weld) Adams County: --McBurney banded a Tennessee Warbler on September 22 at the Barr Lake Banding Station. --McBurney banded a PHILADELPHIA VIREO and recaptured the Tennessee Warbler on September 24. --On September 24, Walbek reported Black-throated Blue Warbler and Cassin's Kingbird at Barr Lake. Boulder County: --A juv Sabine's Gull was reported by Floyd at Boulder Reservoir on September 21. Two Sabine's Gulls were reported by Deininger at Boulder Reservoir on September 23. --A f American Three-toed Woodpecker was reported by Waltman on the west side of Long Lake on September 26. Douglas/Jefferson Counties: --2 juv Sabine's Gulls were reported by Walbek at Chatfield on September 14 and Walbek reported that the Sabine's Gulls remained at Chatfield on September 15. On September 17, Kellner reported 7 Sabine's Gulls (6 juv, 1 ad) at Chatfield. On September 18, Stachowiak reported 4 juv Sabine's Gulls at Chatfield. On September 20, Walbek reported 9 Sabine's Gulls (8 juv, 1 ad) at Chatfield. On September 23, Niyo reported 3 juv Sabine's Gulls off the handicapped fishing pier toward NE. El Paso County: --A Green Heron was reported by Kosar at Fountain Creek RP on September 25. El Paso/Pueblo Counties: --Brown reported that a hatch yr f Magnolia Warbler and hatch yr Ovenbird were banded at Chico Basin on September 23. --Webber reported that a Tennessee Warbler was banded at Chico Basin on September 26. Larimer County: --A male Prothonotary Warbler was reported by Matthews at the east end of the bird sanctuary at Lake Estes on September 16. On September 23 at 9:30 Matthews reported that the Prothonotary Warbler was seen about 20 ft beyond the fence in River Birch and Crapper reported that the warbler was in the easternmost birch at 3:45. On September 26, Mlodinow reported that the Prothonotary Warbler was at the west of the last (easternmost) wooden bridge on the main trail that traverses the N side of Lake Estes. --A Broad-winged Hawk was reported by Biggerstaff flying over Cottonwood Glen Park in Fort Collins on September 24. Cottonwood Glen Park is SE of Dixon Reservoir. --At Fossil Creek Reservoir on September 24, Wild reported 2 Caspian Terns and 1 Nashville Warbler. --A 1st winter White-throated Sparrow was reported by Biggerstaff at Dixon on the brushy hill on west side of nataural area on September 26. Otero County: --A f SCISSOR-TAILED FLYCATCHER was reported by Moss SE of Lake Holbrook on September 24. It was south of CR FF and west of CR 26. Pueblo County: --A Palm Warbler was reported by Lee at Pueblo Reservoir on the N side of the river, a short distance E of bridge that goes north over river from Snake Skin area. Washington County: --At the Inlet Canal at Prewitt on September 23, Vanderpoel reported CANADA WARBLER, Black-and-white Warbler, Tennessee Warbler, and Nashville Warbler. --A Blackpoll Warbler was reported by Mlodinow at the Inlet Canal at Prewitt on September 24. --At Last Chance on September 24, Mlodinow reported Nashville Warbler and ad Broad-winged Hawk. On September 25 at Last Chance, Lee reported 1 Nashville Warbler and 1 White-throated Sparrow and 4-5 miles south of Last Chance she reported a Broad-winged Hawk. --A Broad-winged Hawk was reported by Lee at the entrance to Prewitt on September 25. Weld County: --An American Golden Plover was reported by Nuissl at BYO Playa which straddles CR 75 between CR 100 and 102 on September 24. On September 25, Roller reported 5 American Golden Plovers at BYO Playa. On September 26, Himmel reported 6 American Golden Plovers at BYO Playa. --A Broad-winged Hawk was reported by Mlodinow at Crow Valley CP
[cobirds] Never in all my born days
Hello, Birders. I was pleasantly surprised this morning (in the 3 am hour), Wednesday, September 28th, by a Flammulated Owl vocalizing from a small tree in our yard in Lafayette, Boulder County. I dimly recall from my Nevada days that some of the owl enthusiasts there would find Flamms on migration through the lowlands east of the Carson Range in late September, and a quick check of the Flamm Owl literature confirms it: They migrate through the lowlands right around now. Was interested to read, too, that vocalizations pick up around this time of year. (My experience is that the birds are utterly silent on the breeding grounds for a month or so starting around early July.) Meanwhile, on light northwest winds, there were just a few warbler/sparrow flight calls to be heard during the overnight hours this morning: a Chipping Sparrow and a coupla indeterminates. Ted Floyd tedfloy...@hotmail.com Lafayette, Boulder County, Colorado -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
[cobirds] White-throated Sparrow, Pueblo County
I am currently seeing a White-throated Sparrow, a tan-striped adult, in my yard in Pueblo West. I'm getting very good looks at it from 12-15 feet away through a window, and was able for a short time to compare it to an immature White-crowned Sparrow. Cheers, Margie Joy -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
[cobirds] Prothonotary Warbler at Lake Estes (Larimer) on 9/28, etc.
I finally saw the Prothonotary Warbler at the same area of the Matthews/Reeser Sanctuary at the west end of Lake Estes, Estes Park (Larimer) where it was seen yesterday (that is, in a row of birch growing on the south side of the trail (between the trail and the lake shore) about 75 yards west of the pine-clad peninsula). The view was a good one, but only for a few seconds, about 12:05 this afternoon. I immediately summoned other birders who were further east along the path and we were unsuccessful at refinding this bird. I can't even say which direction it went after my short look, but there was a warbler we never identified that went north across the trail in the direction of the creek (toward the area I believe Steve Mlodinow had it a few days ago) that could have been it. Several other birders looked far and wide for the bird in the AM and, as far as I heard, they were unsuccessful. Good numbers of Birch Catkin Bug (Kleidocerys resedae) continue at this site and I am confidant they are the answer to all the bird activity in the birch trees at this locale. Not a lot of other birds seen today. No Wilson's Warblers. A very few Orange-crowns. A few dozen Yellow-rumps. One Ruby-crowned Kinglet. A few White-crowned and Song Sparrows. And somebody (Mr. Pollock?) reported a Red-naped Sapsucker near the entrance to the peninsula. That's about it. In the way of odds and ends: White-throated Sparrow (1) yesterday at the Denver Zoo (crane habitat in the southwest corner of the property just to the east of the Kookaburras). I have had them here before and they sometimes overwinter. At this same spot, I noticed a Yellow Warbler (late) foraging in Northern Hackberry, perhaps indicating the first emergence of the adult psyllids I've suspected anywhere this fall. Regardless, hatch of nipplegall and blistergall psyllids is imminent, and it would behoove birders to find and check hackberries for songbird migrants over the next month. And just two days ago, I saw several late, completely silent, fast, choppy-flighted Chaetura swifts zooming thru Grandview Cemetery, going generally n to s, at fairly low elevation (below the tree tops). I seem to see a few low-flying, silent ones like this every fall, long after the local Chimney Swifts have departed. They are probably Chimney Swifts from south-central Canada or the upper Midwest (US), but I think I've admitting wondering in the past about the possibility these birds could be southbound Vaux Swifts east of their normal path. Maybe the various banding stations could place a few nets between the tops of adjacent spruce trees and solve the mystery once and for all. I'm kidding, of course, but short of capturing them going in or out of chimneys/roost trees, how do researchers obtain Chaetura swifts to measure, band, and ID? Dave Leatherman Fort Collins -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
[cobirds] correction on location for Prothonotary at Lake Estes
There was an error in my description of the Prothonotary Warbler location today at Lake Estes. The bird was about 75 yards EAST of the pine-clad peninsula on the south side of the trail (right, as you are walking east), between the trail and the lake shore, about midway along a row of several 15-20 foot tall birch trees. Sorry for any confusion. Dave Leatherman Fort Collins -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
Re: [cobirds] White hummer: albinism vs. leucism
With all due respect to Tony, there is not from what I have found general agreement about restricting the use of the term 'albino' to only birds displaying a total lack of melanin pigmentation as I noted in my original post. As referenced in the Cape May blog entry for which Tony provides the link below, Hein van Grouw published the article titled Not every white bird is an albino: sense and nonsense about colour aberrations in birdshttp://www.vogelringschier.nl/DB28%282%2979-89_2006.pdf, in *Dutch Birding*. I had read this article and several others prior to posting my blog entries on the Salida are white hummingbird. I have only read summaries of an article published in the ABA's *Birding* by Jeff N. Davis, Color Abnormalities in Birds: A Proposed Nomenclature for Birders , proposed another set of terms based around ' amelanism' and it's variations (sorry if I goof this up but this is what I understood from a post by On Mon, Sep 26, 2011 at 6:05 PM, coloradodip...@aol.com wrote: Hi all: A primer on abnormally pale plumages can be found at http://cmboviewfromthecape.blogspot.com/search?updated-max=2010-12-12T13%3A32%3A00-05%3A00 (scroll down to the 5 Dec 2010 post). Enjoy, Tony Leukering Villas, NJ -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en. -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
[cobirds] RMBO Barr Banding Station Update, 9/28/11
Today was much like yesterday, although somewhat slower. A flurry of activity very early, and then very quiet as the heat set in. Looking forward to cooler temperatures tomorrow. Here's the breakdown on the 18 new bandings: Rock Wren 1 House Wren 2 Hermit Thrush 2 Orange-crowned Warbler 3 Yellow-rumped Warbler (Myrtle) 1 Wilson's Warbler 1 Green-tailed Towhee2 Chipping Sparrow4 Song Sparrow 2 Open 6 days per week, weather permitting, through October 16. Next closed day is Friday, October 7. Meredith McBurney Bander, Barr Lake Station, Adams County Rocky Mountain Bird Observatory -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
Re: [cobirds] White hummer: albinism vs. leucism
(apologies-while moving back and forth for references and url's, this was accidentally sent unfinished) With all due respect to Tony, there is not from what I have found general agreement about restricting the use of the term 'albino' to only birds displaying a total lack of melanin pigmentation as I noted in my original post. As referenced in the Cape May blog entry for which Tony provides the link below, Hein van Grouw published the article titled Not every white bird is an albino: sense and nonsense about colour aberrations in birdshttp://www.vogelringschier.nl/DB28%282%2979-89_2006.pdf, in *Dutch Birding*. I had read this article and several others prior to posting my blog entries on the Salida are white hummingbird. I have only read summaries of a 2007 article published in the ABA's *Birding * by Jeff N. Davis, Color Abnormalities in Birds: A Proposed Nomenclature for Birders , proposed another set of terms based around ' amelanism' and it's variations (sorry if I goof this up but this is what I understood from a post by Chris Benesh on Bird Forum.nethttp://www.birdforum.net/blog.php?b=79). On my* Birds and Blooms* magazine blog entryhttp://birdsandbloomsblog.com/2011/08/31/rare-albino-hummingbird-the-colorado-hummer/ I utilized information from Cornell's Feeder Watch webpage http://www.birds.cornell.edu/pfw/AboutBirdsandFeeding/Albinism_Leucism.htmthat is dated as updated in 2008 on the page. However I think the one that made the most sense to me was Sibley's discussionhttp://www.sibleyguides.com/2011/08/abnormal-coloration-in-birds-melanin-reduction/#more-5997which included the following: - There has been *some recent discussion about the proper terminology for these conditions* (Buckley 1982, Davis 2007, van Grouw 2006), *with competing proposals from aviculturists, ornithologists, and birders*. One of the reasons for the disarray is the lack of a simple “umbrella” term for all conditions involving the reduction of melanin. Birders cannot be expected to analyze each odd bird and choose the proper term to apply to that particular form of melanin reduction, and this leads to misuse of technical terms. I propose that the term “albino” is already in popular use and has become the default name for the category. *Birders should continue to use the terms “albino” and “partial albino” to refer to any bird with abnormally white or pale feathers. *[my bolding] SeEtta Moss Canon City Personal blog @ http://BirdsAndNature.blogspot.comhttp://birdsandnature.blogspot.com/ Blogging for Birds and Blooms magazine @ Birds and Blooms blog southcentral/http://birdsandbloomsblog.com/category/southcentral/ On Mon, Sep 26, 2011 at 6:05 PM, coloradodip...@aol.com wrote: Hi all: A primer on abnormally pale plumages can be found at http://cmboviewfromthecape.blogspot.com/search?updated-max=2010-12-12T13%3A32%3A00-05%3A00 (scroll down to the 5 Dec 2010 post). Enjoy, Tony Leukering Villas, NJ -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en. -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
[cobirds] CBR Banding Update 9/28
Hi CoBirders, We had a super slow morning, until a wave of Chipping Sparrows came to the rescue! Ruby-crowned Kinglet- 1 Hermit Thrush- 3 American Robin-1 Orange-crowned Warbler- 1 Wilson's Warbler- 7 Chipping Sparrow- 21 Lincoln's Sparrow- 2 Oregon Junco- 1 Pink-sided Junco- 3 That brings our season total to 808 birds banded of 58 species. Happy birding! Julie Webber RMBO Chico Basin Ranch -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
[cobirds] White-faced Ibis at Barr Lake, Adams
On a short lunch-time bicycle ride at Barr Lake (Adams County) today, I saw a pair of White-faced Ibis foraging near the gazebo at Barr Lake State Park. They were lurking in the vegetation by the water's edge just to the northwest of the gazebo, along with lots of snowy and Great Egrets, Great Blue Herons, lots of White Pelicans, ducks, and tons of Cormorants. There were a few Avocets and Killdeer in the finger of water with good mudflats just off the left side of the boardwalk to the gazebo, but no other shorebirds seen or heard, though it looked like a good place for them. One of the Bald Eagles was near the nest. I didn't see many swallows out on the lake (it was noon, and hot) but when I returned to the Adams County Justice Center nearby, from the 6th floor I saw a small flock of Barn Swallows fly by. -Elena Klaver -- You received this message because you are subscribed to the Google Groups Colorado Birds group. To post to this group, send email to cobirds@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
