Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-12-07
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on December 7, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Thayer's Gull
|
Red Rock Dam
|
Red Rock Res., Marion Co., IA
|
below dam on river
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include around twenty unidentified observers on IOU field trip. | Elimination of similar species: Much lighter and more uniform than 1st winter Herring Gulls flying in area. | The original documentation form event lasted from 08:00:00/09:00:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting for Black-headed Grosbeak at Larrabee, 1983
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-09-30
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Black-headed Grosbeak at Larrabee in Cherokee County, IA on September 30, 1983. Includes a record review document with votes, a summary of the review, and a documentation form submitted to the committee.
|
Brewer, Marion M.
|
Black-headed Grosbeak
|
Larrabee
|
4 mile E of Larrabee
|
Road ditch plum thicket some vines. Almost all of leaves dropped
|
The documentation form by Marion Brewer is the only one submitted and forms the basis of this record. | Elimination of similar species: Rose breasted female Grosbeak. Orange breast. | The original documentation form event lasted from 14:15:00/14:20:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
3
|
Records Committee review for rare bird sighting for Black-headed Grosbeak at Marble Rock, 1983
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-05-09
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Black-headed Grosbeak at Marble Rock in Floyd County, IA on May 9, 1983. Includes a record review document with votes, a letter from Bruce Peterjohn to Tom Kent, a summary of the review, and a documentation form submitted to the committee.
|
Knoop, Pearl
|
Black-headed Grosbeak
|
Marble Rock
|
Floyd county, about a mile south of Marble Rock, along river
|
Narrow tree and shrubby area along the Shellrock. This type of habitat extends along the river on both sides. More bushy in some places than others. There are nearby cultivated fields and tree areas.
|
The documentation form by Pearl Knoop is the only one submitted and forms the basis of this record. | Elimination of similar species: female rose-breased [sic] grosbeak. | The original documentation form event lasted from 08:00:00/08:10:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
3
|
Records Committee review for rare bird sighting for Black-headed Grosbeak at Elkhart, 1982
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-11-23
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Black-headed Grosbeak at Elkhart in Polk County, IA on November 23, 1982. Includes a record review document with votes, a letter from Bruce Peterjohn to Tom Kent, a summary of the review, and a documentation form submitted to the committee.
|
Mosman, Dean
|
Black-headed Grosbeak
|
Elkhart
|
2 M.E. Elkhart, IA
|
in wooded area
|
The documentation form by Darwin (Dean) Mosman is the only one submitted and forms the basis of this record. Other observers include Mike Mosman and Diane Mosman. | Elimination of similar species: Female Rose-breasted Grosbeak only species close to same appearance. No voice heard, behavior and habitat the same. Color and streaking only difference. | The original documentation form event lasted from 07:15:00/07:30:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
3
|
Records Committee review for rare bird sighting for Black-headed Grosbeak at Decorah, 1982
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-07-29
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Black-headed Grosbeak at Decorah in Winneshiek County, IA on July 29, 1982. Includes a record review document with votes, a letter from Bruce Peterjohn to Tom Kent, a summary of the review, and a letter from Jeri McMahon to Tom Kent.
|
McMahon, Jeri
|
Black-headed Grosbeak
|
Decorah
|
Trout River, near Decorah
|
|
A letter from Jeri McMahon to Tom Kent forms the basis of this record. | Elimination of similar species: The female rose-breasted grosbeak, plus juveniles, were also present that day, so I could compare the 2 species very well. It was not an im. male rose-breasted, although I saw several of those.
|
Iowa Ornithologists' Union | MS 166
|
14
|
3
|
Records Committee review for rare bird sighting for Black-headed Grosbeak at Little Swan Lake, 1982
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-07-14
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Black-headed Grosbeak at Little Swan Lake in Dickinson County, IA on July 14, 1982. Includes a record review document with votes, a summary of the review, a letter from Bruce Peterjohn to Tom Kent, and a documentation form submitted to the committee.
|
Harr, Douglas C.
|
Black-headed Grosbeak
|
Christopherson Slough / Little Swan Lake Wildlife Management Area
|
Woods, N. edge Little Swan Lake, Dickinson Co., Iowa (near Superior)
|
General: woodlands near lakeshore. Specific: bare branch understory of plum thicket (deep shade), at edge of planting of 25 ft. Austrian pines and black walnut trees.
|
The documentation form by Douglas C. Harr is the earliest and the one that forms the basis of this record. | Elimination of similar species: Rose-breasted grosbeak (female)--little or no yellow-tan color to breast & more heavily spotted or streaked. Blue Grosbeak (female)--a more uniform, unstreaked brown or tan. | The original documentation form event lasted from 13:22:00/13:23:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
3
|
Records Committee review for rare bird sighting for Black-headed Grosbeak at Rush Lake, 1982
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-05-20
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Black-headed Grosbeak at Rush Lake in Palo Alto County, IA on May 20, 1982. Includes a record review document with votes, a summary of the review, a letter from Ann Sernett to Thomas Kent, and a documentation form submitted to the committee.
|
Harms, Ronald
|
Black-headed Grosbeak
|
Rush Lake
|
South side Rush Lake, Palo Alto Co. and Mable [sic] Grous grove, Pocahontas Co.
|
Open woods
|
The documentation form by Ronald Harms is the only one submitted and forms the basis of this record. Other observers were Ann Luther, Mabel Grous, Ken Sernett and Ann Sernett. | Elimination of similar species: there were many [female symbol] Rose-brested [sic] around to compare.
|
Iowa Ornithologists' Union | MS 166
|
14
|
3
|
Records Committee review for rare bird sighting for Black-headed Grosbeak at Amana Woods, 1982
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-05-10
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Black-headed Grosbeak at Amana Woods in Iowa County, IA on May 10, 1982. Includes a record review document with votes, a letter from Bruce Peterjohn to Tom Kent, and two documentation forms submitted to the committee.
|
Silcock, W. Ross
|
Black-headed Grosbeak
|
Amana Woods
|
Amana Woods
|
Deciduous woods. Trail through woods along ridge.
|
The documentation form by W. Ross Silcock is the earliest and the one that forms the basis of this record. Another documentation form by Thomas Kent was submitted later. Other observers include Tom Staudt and Carl Bendorf. | The original documentation form event lasted from 18:30:00/18:32:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
3
|
Records Committee review for rare bird sighting for Black-headed Grosbeak at Cedar Rapids, 1978
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1978-12-01
|
1993-08-19
|
Rare birds documentation form
|
Records Committee review for a Black-headed Grosbeak at Cedar Rapids in Linn County, IA on December 1, 1978. Includes a record review document with votes, a photograph, an article in Iowa Bird Life, and a documentation form submitted to the committee.
|
Millikin, Sara L.
|
Black-headed Grosbeak
|
Cedar Rapids
|
Usually on the ground where I had thrown seed
|
along railway right of way near my home and on ground near house and feeders
|
The documentation form by Sara L. Millikin is the earliest and the one that forms the basis of this record. Other observers include Pete Wickham, Lillian Serbousek, Roberta Appedahl, Fred Nissen, Weir Nelson, Karl Goellner, and Lucile Liljedahl. | The original documentation form event lasted from at daylight to 16:00:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
3
|
Records Committee review for rare bird sighting of Least Tern at Cone Marsh, 1984
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-05-19
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Least Tern at Cone Marsh in Louisa County, IA on May 19, 1984. Includes a record review document with votes, a summary of a review, and two documentation forms submitted to the committee.
|
Bendorf, Carl J.
|
Least Tern
|
Cone Marsh Wildlife Management Area
|
Cone Marsh
|
State owned marsh of about 700 Acres.
|
The documentation form by Carl J. Bendorf forms the basis of this record. Another documentation form by Thomas J. Staudt was submitted. | Elimination of similar species: The obvious possibilities are both Common or Forsters' Terns. At the very most, this bird was perhaps half the size of the gulls. This would put the body length in the general range of 8" long with a wingspread of 24" (according to size of Ring bills in the Natl. Geo. Guide) The Natl. Geo. Guide gives the general size range of Least Tern as 9" long with a wingspread of 20 ". The sizes of the other terns are given as Common L 14 1/2', W 30", and Forsters' L 14 1/2, W=31". Thus on size alone, Least Tern seems to be the only reasonable choice. The short but deeply forked tail also indicates Least Tern. Harrison's SEABIRDS says, on page 182, "Size and hurried flight,..., usually sufficient to clinch identification in northern hemisphere". The flight of this bird was much quicker and fluttery compared to my experience with the slower, deeper, and more deliberate flight of Common and Forster's Terns. | The original documentation form event lasted from 09:30:00/09:32:00.
|
Iowa Ornithologists' Union | MS 166
|
12
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 15 near Davenport, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-12-31
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Lock and Dam 15 near Davenport in Scott County, IA on December 31, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Thayer's Gull
|
Lock and Dam 15
|
Lock + Dam 15, Davenport, Scott Co., IA
|
Mississippi River
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. | Elimination of similar species: Translucent flight feathers and upper wing pattern and lighter tail band separate from Herring Gull | The original documentation form event lasted from 14:30:00/14:35:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 13, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-12-28
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for two Thayer's Gulls at Lock and Dam 13 in Clinton County, IA on December 28, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Blevins, Brian L.
|
Thayer's Gull
|
Lock and Dam 13
|
Lock + Dam 13 on Mississippi River
|
Mississippi River Flyway just Below the Dam
|
The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey Blevins, Lewis Blevins, and Jennifer Anderson. | Elimination of similar species: Herring Gull -> eliminated by the light brown color continuous all the way throughout the wingtips, thus there was not a darkening towards the wing tips. The mantle was also lighter than those of the nearby Herring Gulls. | The original documentation form event lasted from 14:30:00/14:50:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 15 near Davenport, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-12-15
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for two Thayer's Gull at Lock and Dam 15 near Davenport in Scott County, IA on December 15, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Blevins, Brian L.
|
Thayer's Gull
|
Lock and Dam 15
|
Lock + Dam 15 on Mississippi River
|
Mississippi River Flyway just below the Dam
|
The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey Blevins, Lewis Blevins, and Peter C. Petersen. | Elimination of similar species: Herring Gull -> Immature - eliminated by the light brown color continuous all the way throughout the wingtips, thus there was not a darkening towards the wing tips. Adult - eliminated by the light mantle getting lighter towards the wingtips, with just a few grey spots on the primaries. | The original documentation form event lasted from 15:15:00/15:45:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting for Thayer's Gull at Red Rock Dam, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-11-08
|
1993-08-06
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on November 8, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Proescholdt, Beth
|
Thayer's Gull
|
Red Rock Dam
|
Red Rock
|
below dam
|
The documentation form by Beth Proescholdt is the only one submitted and forms the basis of this record. Another observer includes Mark Proescholdt. | Elimination of similar species: It was lighter + more evenly colored than a Herring Gull, larger than Ring-billed, too dark for an Iceland too small for a Glaucous. | The original documentation form event lasted from 08:50:00/09:00:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Record Committee review for rare bird sighting of Thayer's Gull at Gray's Lake, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-11-30
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Gray's Lake in Polk County, IA on November 30, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Cecil, Robert I.
|
Thayer's Gull
|
Grays Lake
|
Gray's Lake, Des Moines, Polk County, IA
|
Lake with some open water
|
The documentation form by Bob Cecil is the only one submitted and forms the basis of this record. Another observer includes Mary Michelle Cecil. | Elimination of similar species: Herring much more "contrasty", including dark secondary bar, dark tail band, very dark towards ends of primaries. This bird was smaller than 1st wither [sic] Herring, as well as paler brown. | The original documentation form event lasted from 10:30:00/11:00:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-11-25
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on November 25, 1991. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Johnson, Ann
|
Thayer's Gull
|
Red Rock Dam
|
Below dam, Red Rock Reservoir, Marion Co., IA
|
Gravel bar and open river
|
The documentation form by Ann Johnson forms the basis of this record. Another documentation form by Thomas H. Kent was submitted. Other observers include Jim Fuller, Dick Tetrault, and Tim Schantz. | Elimination of similar species: Herring Gull was eliminated by the light and uniform body color, pale gray primaries, secondaries and tailband, lack of a window from above, and lack of any color to the underside of the primaries. The bird certainly had the overall coloration of a first year Iceland Gull. However, Iceland Gull was eliminated based on the darker secondaries, complete gray tail band, and the darker webs to the outer primaries from above. | The original documentation form event lasted from 16:10:00/16:50:00 on November 25, 1991 and 13:50:00/14:05:00 on November 28, 1991.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-10-24
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on October 24, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Johnson, Ann
|
Thayer's Gull
|
Red Rock Dam
|
Below dam, Red Rock Reservoir, Marion Co., IA
|
Gravel bar and open river
|
The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. | Elimination of similar species: Herring Gull was eliminated by the light and uniform body color, brown as opposed to blackish primaries and tail band, lack of a window from above, and lack of any color to the underside of the primaries. Iceland Gull was eliminated based on the darker secondaries and wide, brown tail band. | The original documentation form event lasted from 16:50:00/17:15:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Reservoir Dam, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-03-14
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for two Thayer's Gulls at Red Rock Reservoir Dam in Marion County, IA on March 14, 1991. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Johnson, Ann
|
Thayer's Gull
|
Red Rock Dam
|
Below dam, Red Rock Reservoir, Marion Co., IA
|
Gravel bar and open river
|
The documentation form by Ann Johnson is the one that forms the basis of this record. Another documentation form by Diane Porter was submitted. Other observers include Beth Brown and Tim Schantz. | Elimination of similar species: Herring Gull was eliminated by the light and uniform body color, brown as opposed to blackish primaries and tail band, bill and head structure, and lack of any color to the underside of the primaries. Iceland Gull was eliminated based on the darker secondaries and wide, brown tail band. | The original documentation form event lasted from 10:20:00/10:40:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 19 at Keokuk, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-02-16
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Lock and Dam 19 at Keokuk in Lee County, IA on February 16, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Allen, Reid I.
|
Thayer's Gull
|
Lock Number 19
|
Lock & Dam #19 - Keokuk, Iowa
|
River channel with open water below dam extending 3/4 mile from dam
|
The documentation form by Reid Allen is the only one submitted and forms the basis of this record. Other observers include Pam Allen, Eugene Armstrong, and Eloise Armstrong. | Elimination of similar species: First-winter Herring gulls (many were present) had blackish wingtips. Juvenile Iceland gull wingtips lack dark edging on primaries as do those on Glaucous-winged Gull. | The original documentation form event lasted from approximately 10:30:00/10:50:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1990
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1990-11-21
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on November 21, 1990. Includes a record review document with votes and a documentation form submitted to the committee.
|
Fuller, James L
|
Thayer's Gull
|
Red Rock Dam
|
Below Red Rock Dam- Marion County
|
River
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. Other observers include Ann Johnson, Chuck Fuller, and Jane Fuller. | Elimination of similar species: Herring Gull (first winter) compared above. [...] I first saw this bird flying, and the underwing was translucent throughout the primaries to the end of the wing (Herring Gull had dark outer primaries, although most also had a lighter window type area medial to this dark area). The bird was about the same size or a little smaller than the Herrings. The upperwing in flight was much lighter in the primaries than the first winter herrings. [...] It had a more rounded head than the herrings. [...] It's color was more uniform than the herrings and also lighter- a brownish color. There was a dark smudge around the eye. The feather edging (whitish) provided more contrast with the brown on the back than in the herrings, and the folded tail was brownish, not black. When in flight the tail band was brownish not blackish like the herrings. | The original documentation form event lasted from 13:15:00/13:45:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Saylorville Dam, 1989
|
Administrative records Clippings (information artifacts) Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-12-07
|
1993-08-06
|
Rare birds documentation form
|
Records Committee review for two Thayer's Gulls at Saylorville Dam in Polk County, IA on December 7, 1989. Includes a record review document with votes, a photocopy of a photograph on the cover page of Iowa Bird Life, and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Thayer's Gull
|
Saylorville Dam
|
Saylorville Reservoir, Polk Co.
|
large reservoir
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The size, uniform body and wing color, pale underside of the flight feathers, and tail band eliminates Herring and Glaucous/Iceland gulls, the most likely candidates for confusion. | The original documentation form event lasted from 14:04:00/16:42:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 15 in Davenport, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-12-17
|
1993-08-06
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Lock and Dam 15 in Davenport in Scott County, IA on December 17, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Blevins, Brian L.
|
Thayer's Gull
|
Lock and Dam 15
|
Just above the Lock + Dam 15 (Davenport, Ia)
|
Frozen ice above the dam in the Mississippi River
|
The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey Blevins and Lewis Blevins. | Elimination of similar species: Herring Gull - eliminated by the dark eye and by the lack of black on the primary tips. | The original documentation form event lasted from 15:30:00/15:42:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Saylorville Dam, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-11-28
|
1993-08-06
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Saylorville Dam in Polk County, IA on November 28, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Thayer's Gull
|
Saylorville Dam
|
Saylorville Reservoir, Polk Co.-above dam
|
feeding with other gulls on large reservoir
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include Bob Myers. | Elimination of similar species: The size, uniform body color, pale underside of the flight feathers, and dark bill eliminates othr [sic] gulls. Iceland Gull eliminated by uniform wing color without noticeably lighter wingtips. | The original documentation form event lasted from 16:15:00/16:20:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Credit Island, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-11-24
|
1993-08-06
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Credit Island in Scott County, IA on November 24, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Petersen, Peter C.
|
Thayer's Gull
|
Credit Island
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Credit Island harbor
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ice covered Miss. River backwater
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The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Jim Fuller, Brian Blevins, Corey Blevins, Lewis Blevins, Thomas H. Kent, John Daniels, and Ken Lowder. | Elimination of similar species: Herring Gull - dark brown primary tips, lacked silvery below wings. lack smudge on head | The original documentation form event lasted from 08:45:00/08:50:00 and 15:30:00/15:45:00.
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Iowa Ornithologists' Union | MS 166
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11
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3
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Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 19 at Keokuk, 1989
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Administrative records Field notes Photographs
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Bird watching Ornithology Ornithology--Societies, etc
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1989-11-24
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1993-08-06
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Rare birds documentation form
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Records Committee review for two Thayer's Gulls at Lock and Dam 19 at Keokuk in Lee County, IA on November 24, 1989. Includes a record review document with votes, four photographs, and a documentation form submitted to the committee.
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Cecil, Robert I.
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Thayer's Gull
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Lock Number 19
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Behind Lock and Dam 19 at Keokuk in Lee County, Iowa (Iowa side)
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River (Mississippi)
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The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. Other observers include John Cecil, Tom Kent, and Francis Moore. | Elimination of similar species: Only probable similar species is Herring, which has contrasty wings - dark trailing edge and darker wingtips. The Thayer's were obviously a lighter shade of brown than any Herrings present. I judged these birds to be somewhat smaller than any Herring. I could not totally rule out first year Glaucous-winged. According to NGS, Glaucous-wing has less mottling or scalloping. The Keokuk birds were obviously mottled. | The original documentation form event lasted from 11:05:00/11:30:00.
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Iowa Ornithologists' Union | MS 166
|
11
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3
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