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 Greater Roadrunner north of Delta in 1970
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Birds--Geographical distribution Birds--Identification Rare birds
|
1970-05-07
|
1993-09-01
|
Manuscript, graphic, and printed material
|
Records Committee review for a Greater Roadrunner north of Delta in Keokuk County, IA on April 26, 1970. Includes a record review document with votes, the original sighting record found in a letter from John D. Black regarding the sighting by Joseph Sens, and the published account in Audubon Field Notes 24(4): 614.
|
Iowa Ornithologists' Union Records Committee
|
Greater Roadrunner
|
Delta
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
12
|
14
|
Records Committee review for rare bird sighting for Greater Prairie-Chicken in the Ocheyedan Township in Osceola County in 1984
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Birds--Identification Rare birds
|
1984-01-05
|
1993-09-01
|
Manuscript, graphic, and printed material
|
Records Committee review for a Greater Prairie-Chicken in the Ocheyedan Township in Osceola County, IA on January 2, 1984. Includes a record review document with votes, a letter from Ron Spengler to Doug Harr reporting the sighting on January 5, 1984, the published sighting record found in the publication Greater Prairie Chicken in Osceola County in Iowa Bird Life 54:21 by Ron Spengler, and a summary of the review.
|
Iowa Ornithologists' Union Records Committee
|
Greater Prairie-Chicken
|
Ocheyedan Township
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
9
|
9
|
Records Committee review for rare bird sighting for Wood Stork at Grandview in 1977
|
Administrative records Correspondence Field notes
|
Birds--Identification Rare birds
|
1977-09-25
|
1993-09-01
|
Manuscript, graphic, and printed material
|
Records Committee review for a Wood Stork at Grandview in Louisa County, IA on September 25, 1977. Includes a record review document with votes, the original sighting record found in the notes of Marc Twaits, and referenced in a phone conversation between Bob Sanz to Sally Hinz.
|
Iowa Ornithologists' Union Records Committee
|
Wood Stork
|
Grandview
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
8
|
1
|
Records Committee review for rare bird sighting for House Finch at Davenport, 1983
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-06-17
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for rare bird sighting for a House Finch at Davenport in Scott County, IA on June 17, 1983. Includes a record review document with votes, a summary of the review and a letter from Ann Barker to Tom Kent containing a documentation form submitted to the committee.
|
Barker, Ann M. Barker, William S.
|
House Finch
|
Davenport
|
in yard around feeder
|
our yard is at the edge of a suburban neighborhood with 30 or so houses, with cultivated fields immediately adjacent on 2 sides.
|
The documentation form by Bill and Ann Barker is the only one submitted and forms the basis of this record. | Elimination of similar species: A finch, slightly larger than Goldfinches concurrently at feeder. A thinner or less puffy appearance than Purple Finch, with brighter more orange red color. Shape of head may be flatter than Purple Finch. | The original documentation form event lasted from 18:10:00/19:00:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
15
|
Records Committee review for rare bird sighting for House Finch at Mason City, 1982
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-09-01
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a House Finch at Mason City in Cerro Gordo County, IA on September 1982. Includes a record review document with votes, summary of the review, a letter from Mildred Moore to Ross Silcock, and another letter from Mildred Moore to Ross Silcock forwarded to Tom Kent.
|
Moore, Mildred L.
|
House Finch
|
Mason City
|
1225 N. Jefferson Ave., Mason City, Iowa
|
|
A letter from Mildred Moore to Ross Silcock forms the basis of this record.
|
Iowa Ornithologists' Union | MS 166
|
14
|
15
|
Records Committee review for rare bird sighting for House Finch at Ottumwa, 1982
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1982-06-26
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a House Finch at Ottumwa in Wapello County, IA on June 26, 1982. Includes a record review document with votes, a summary of the review, a field report, a letter from Don Johnson to Tom Kent, and a draft of the field report.
|
Johnson, Donald G.
|
House Finch
|
Ottumwa
|
Ottumwa, Iowa
|
|
The field report by Don Johnson forms the basis of this record. Another observer was Elaine Johnson. | Elimination of similar species: Purple Finch. | The original documentation form event occurred around 17:00:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
15
|
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 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 Gray-cheeked Thrush at Waubonsie State Park, 1983
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-04-24
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Gray-cheeked Thrush at Waubonsie State Park in Fremont County, IA on April 24, 1983. Includes a record review document with votes, correspondence about bird sightings and documentations, a summary of the review, and a documentation form submitted to the committee.
|
Scott, Charlotte
|
Gray-cheeked Thrush
|
Waubonsie State Park
|
Waubonsie State Park
|
Near a trail through a high wooded section
|
The documentation form by Charlotte Scott is the only one submitted and forms the basis of this record. Another observer was Dick Scott. | Elimination of similar species: [...] I had time to observe a smaller than robin-sized, plump-looking bird--evenly brown-gray. I had my glasses on him long enough to check that there was not a distinct eye ring and that the splotches on his breast were distinct and separate--not blurry--and fairly bold. [...] There was no question in my mind but that he was a thrush, but I thought this bird more brown on his back than I remembered Gray-cheeked to be. I considered Veery, but stayed with my original call. | The original documentation form event occurred from approximately 09:45:00/09:45:15.
|
Iowa Ornithologists' Union | MS 166
|
13
|
7
|
Records Committee review for rare bird sighting for Common Raven at Dubuque, 1983
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-12-17
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for a Common Raven at Dubuque in Dubuque County, IA on December 17, 1983. Includes a record review document with votes, correspondence relevant to bird sighting and review, a summary of review, and a documentation submitted to the committee.
|
Herrman, William
|
Common Raven
|
Dubuque
|
Location was about three miles south of Dubuque city limits, in narrow valley with scattered cedar trees, with bird in a leafless tree
|
|
The documentation by William Herrmann is the only one submitted and forms the basis of this record. Other observers include John Feller and John Stampe. | Elimination of similar species: One half larger than a dozen Am. crows about 100 feet away from the raven at same distance | The original documentation form event occurred around 14:00:00.
|
Iowa Ornithologists' Union | MS 166
|
12
|
47
|
Records Committee review for rare bird sighting for Eastern Wood-Pewee at Waubonsie State Park, 1983
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-04-24
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review for an Eastern Wood-Pewee at Waubonsie State Park in Fremont County, IA on April 25, 1983. Includes a record review document with votes, a summary of the review, correspondence relevant to bird sighting and review, and a documentation form submitted to the committee.
|
Scott, Charlotte
|
Eastern Wood-Pewee
|
Waubonsie State Park
|
Waubonsie State Park
|
near a trail in a wooded section of fairly tall trees
|
The documentation form by Charlotte Scott is the only one submitted and forms the basis of this record. Another observer was Dick Scott. | Elimination of similar species: [...] I ruled out Empidonax flycatchers immediately because of his lack of an eyering and what I considered--smaller size. I ruled out Eastern Phoebe because of the distinct wing bars, the yellow lower mandible and the fact that he did not flick his tail. Also I considered this to be better habitat for a Pewee. 90% of the Phoebes I see are near a bridge and stream or deserted buildings. | The original documentation form event lasted from 09:30:00/09:33:00.
|
Iowa Ornithologists' Union | MS 166
|
12
|
32
|
Records Committee review for rare bird sighting of Mississippi Kite at Cardinal Marsh, 1978
|
Administrative records Clippings (information artifacts) Correspondence Field notes Forms (documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1978-05-29
|
1993-08-27
|
Rare birds documentation form
|
Records Committee review for a Mississippi Kite at Cardinal Marsh in Winneshiek County, IA on May 29, 1978. Includes two record review documents with votes, two documentation forms, an Iowa Bird Life article, additional notes on the bird, and internal correspondence submitted to the committee.
|
Moore, Francis L.
|
Mississippi Kite
|
Cardinal Marsh State Wildlife Area
|
Cardinal Marsh
|
Edge of woods near open cattail marsh
|
The documentation form by Francis L. Moore is the earliest and the one that forms the basis of this record. Other documentation forms by Tom Stone, Jr. and Sr. were submitted later. Other observers include Russell Hays. | Elimination of similar species: White-tailed Kite does not have as dark a back as this bird ha and is also too light below. This bird definately [sic] did not have a deeply forked tail as a Swallow-tailed Kite would have had. | The original event lasted from 11:15:00 to 11:30:00.
|
Iowa Ornithologists' Union | MS 166
|
8
|
26
|
Records Committee review for rare bird sighting for Harlequin Duck at Big Creek Lake in 1976
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Birds--Identification Rare birds Zoological specimens
|
1977-01-01
|
1993-08-27
|
Manuscript, graphic, and printed material
|
Records Committee review for a Harlequin Duck at Big Creek Lake in Polk County, IA on October 31, 1976. Includes a record review document with votes, letter from Jim Dinsmore to Tom Kent about Harlequin Duck specimens, and the original sighting record found in the publication Sea Birds that Visit Iowa in Iowa Ornithology 2:31-34 by F.H. Shoemaker.
|
Iowa Ornithologists' Union Records Committee
|
Harlequin Duck
|
Big Creek Lake
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
8
|
19
|
Records Committee review for rare bird sighting for Pygmy Nuthatch at Des Moines, 1977
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1977-01-26
|
1993-08-26
|
Rare birds documentation form
|
Records Committee review for a Pygmy Nuthatch at Des Moines in Polk County, IA on January 26, 1977. Includes a record review document with votes, multiple articles from Iowa Bird Life, correspondence related to bird sighting and review, and two documentations submitted to the committee.
|
Brown, Woodward H.
|
Pygmy Nuthatch
|
Des Moines
|
[...] 5400 Woodland Ave.
|
|
The documentation form by Woodward H. Brown is the earliest and the one that forms the basis of this record. Another documentation form by Nicholas Halmi was submitted later. Other observers include Eugene Armstrong, Eloise Armstrong, Mary Brown, Dorothy Ely, Peter C. Petersen, Mary Lou Petersen, Margaret Brooke, Lillian Serbousek, Allen Mueller, and many unidentified observers. | Elimination of similar species: [...] According to plumage descriptions of the Pigmy and Brown-headed Nuthatches, the only noticeable difference between the two (short of having the bird in hand) is in the color of the crown and nape. The field guides are agreed that the crown of the Brown-headed is brown, but there is a lack of unanimity in their descriptions of the crown of the Pigmy. [...] Margaret Brooke, in writing up the observation for IBL, describes the cap as being "brownish" but has no doubt about this nuthatch being a Pigmy. Mary and I feel the grayish olive description comes closest and cinches the Pigmy identification. | The original documentation form event occurred around 09:30:00.
|
Iowa Ornithologists' Union | MS 166
|
12
|
51
|
Records Committee review for rare bird sighting of Thayer's Gull at Saylorville Dam, 1981
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1981-12-10
|
1993-08-26
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Saylorville Dam in Polk County, IA on December 10, 1981 recorded incorrectly as 1982 on the documentation form. Includes a record review document with votes, correspondence and commentary about the sighting, and a documentation form submitted to the committee.
|
Schaufenbuel, Joseph P.
|
Thayer's Gull
|
Saylorville Dam
|
Above and below Saylorville Dam
|
Open water, rocky shore and ice covered pond.
|
The documentation form by Joe Schaufenbuel is the only one submitted and forms the basis of this record. | Elimination of similar species: [...] Nearly the same size as an immature Herring Gull, but neck seemed thinner, head smaller. Bill was same length as a Herring Gull's but was blunter, not as strongly hooked. [...] The primaries were not nearly as dark as immature (1st year) or 2nd year Herring Gulls and was of a much different color than the black color of that species. Primaries and tail were nearly the same color. [...] In flight this bird could be easily picked out from the immature Herring Gulls at considerable distances. Using 7x35 binoculars the beige color of the upper surface of wings and translucent underwing could be detected as far as three-quarters of a mile. There were also three other birds that resembled this particular bird though they appeared darker on the upperparts. However I was unable to get close observations of these birds. The bird I observed closely and documented had one primary feather missing and aided in tracking the bird from day to day.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Coralville Dam, 1981
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1981-12-06
|
1993-08-26
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Coralville Dam in Johnson County, IA on December 6, 1981. Includes a record review document with votes, correspondence and commentary about the sighting, field notes, and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Thayer's Gull
|
Coralville Dam
|
Coralville Res. Dam, Johnson Co., Iowa
|
Reservoir just above dam on ice
|
The documentation form by Thomas H. Kent as dictated to Carl Bendorf is the only one submitted and forms the basis of this record. Another observer was Carl Bendorf. | Elimination of similar species: imm. Herring Gull. The second year Herring has a light bill with black tip and more contrasting black and white pattern to wings and tail. The first year Herring is much darker, has a more bulbous, hooked bill, and lacks the definitewhite [sic] window in flight. | The original documentation form event lasted from 08:15:00/08:30:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Lake Manawa, 1981
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1981-12-05
|
1993-08-26
|
Rare birds documentation form
|
Records Committee review for a Thayer's Gull at Lake Manawa in Pottawattamie County, IA on December 5, 1981. Includes a record review document with votes, correspondence and commentary about the sighting, and a documentation form submitted to the committee.
|
Silcock, W. Ross
|
Thayer's Gull
|
Lake Manawa
|
Lake Manawa
|
|
The documentation form by W. Ross Silcock is the only one submitted and forms the basis of this record. | Elimination of similar species: [...] Smaller than adult Herring Gull (winter plumage, red spot end of lower mandible) beside it, legs a little pinker. Larger than Ring-billed Gulls- flock of 14 adjacent. [...] Headmuch [sic] smaller relative to body than in the Herring Gull- also flatter-appearing. [...] 1. Bill was black (or very dark); this , combined with the rather pale underparts relative to the rest of the (also rather pale) plumage tends to rule out a first year Herring Gull. 2. Bill and head size and shape were not as heavy-appearing as in Herring Gull. Direct comparison with adjacent adult Herring Gull was very useful in deciding this. [...] 5. Size and pinker legs than Herring Gull are not sure characters, but lend support to identification as Thayer's Gull.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting for Hoary Redpoll at Marion, 1981
|
Administrative records Clippings (information artifacts) Correspondence Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1978-01-22
|
1993-08-26
|
Rare birds documentation form
|
Records Committee review for a Hoary Redpoll at Marion in Linn County, IA on January 22, 1978. Includes a record review document with votes, three articles in Iowa Bird Life, a photograph, a letter of Vernon Kleen to Nicholas Halmi, and three documentation forms submitted to the committee.
|
Thompson, Fred K.
|
Hoary Redpoll
|
Marion
|
2830 McGowan Blvd., Marion, Iowa
|
My back yard at thistle feeder, near city park with flocks of common redpolls. 1/4 miles from large weedy field and farmland
|
The documentation form by Fred Thompson is the earliest and the one that forms the basis of this record. Other documentation forms by Tom Shires and Nicholas Halmi were submitted later. | Elimination of similar species: Cardelis flammea - common redpoll - by color and beak size. | The original documentation form event lasted from 07:00:00/10:30:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
16
|
Records Committee review for rare bird sighting of Thayer's Gull at Coralville Dam, 1981
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1981-11-08
|
1993-08-26
|
Rare birds documentation form
|
Records Committee review for three Thayer's Gulls at Coralville Dam in Johnson County, IA on November 8, 1981. Includes a record review document with votes, correspondence and commentary about the sighting, summary of the review, and a documentation form submitted to the committee.
|
Moore, Francis L.
|
Thayer's Gull
|
Coralville Dam
|
Coralville Reservoir
|
Open wate [sic] near small sandy beach near the Dam area, Johnson County
|
The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Russell Hays, Tom Kent, Tom Shires, Tom Staudt, and many unidentified other observers. | Elimination of similar species: Ring-billed Gull and Herring Gull, see above. The Ring-billed Gulls were seen in direct contrast to these three birds and were definitely much smaller birds. The Herring Gulls (first year birds) that I have seen have more of a contrast between the rump and back and upper wing surfaces and none that I remember showed the whitish trailing edge on the tail. [...] The three birds seen were about the size of Herring Gulls in typical first year plumage. They were obviously large gulls of the genus Larus with a noticeably larger size than the Ring-billed Gulls and one Bonaparte's Gull that were next to the three larger birds. [...] There were no Herring Gulls nearby with which to make a comparison of size and coloration. The bills of all three gulls were black did not seem as heavy or bulky as the bill of a Herring Gull. | The original documentation form event lasted from 08:10:00/09:30:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Coralville Dam, 1981
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1981-11-07
|
1993-08-26
|
Rare birds documentation form
|
Records Committee review for two Thayer's Gulls at Coralville Dam in Johnson County, IA on November 7, 1981. Includes a record review document with votes, correspondence and commentary about the sighting, and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Thayer's Gull
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Coralville Dam
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Coralville Res. Dam, west overlook, Johnson Co. Iowa
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Reservoir, just above dam, in water and on swimming beach
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The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Carl Bendorf, Mike Newlon, and many unidentified other observers. | Elimination of similar species: Photographs taken at the first encounter with a Celestron 750 mm lens demonstrate the size difference, the bill and head shape difference, the lighter overall color, and the window in the wing. An adult Herring was in the photo with the Thayer's on 7 Nov and imm Herring were photographed on 10 Nov for comparison. | The original documentation form event lasted from 09:25:00/09:50:00 and 11:00:00/11:20:00 on November 7, 1981 and 07:30:00/08:30:00 on November 8, 1981.
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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 Lake Manawa, 1981
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Administrative records Clippings (information artifacts) Correspondence Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1981-03-19
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1993-08-26
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Rare birds documentation form
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Records Committee review for two Thayer's Gulls at Lake Manawa in Pottawattamie County, IA on March 19, 1981. Includes a record review document with votes, correspondence and comments about the sighting, an article in Iowa Bird Life, and four documentation forms submitted to the committee.
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Silcock, W. Ross
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Thayer's Gull
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Lake Manawa
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Lake Manawa, Pottawattamie County, Iowa.
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The documentation form by Ross Silcock is the earliest and the one that forms the basis of this record. Other documentation forms by Thomas H. Kent, Peter C. Petersen, and Robert K. Myers were submitted later. Other observers include Tom Shires, James Kovanda, Sandra Kovanda, Tanya Bray, Babs Padelford, Loren Padelford, B.J. Rose, and four unidentified other observers. | Elimination of similar species: The above description separates by direct comparison first-year Thayer's and Herring Gulls, the most similar species present. Thayer's may be confused in first year plumage with Kumlien's form of Iceland Gull, but the Thayer's had primaries slightly darker than the mantle (from above), whereas the opposite occurs in Iceland Gull (Lehman). Lehman also notes that some first-year Western Gulls may show translucent primaries from below in certain light, but these observations took place in excellent light at fairly close range. | The original documentation form event lasted from approximately 09:30:00/11:00:00.
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Iowa Ornithologists' Union | MS 166
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11
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3
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