Records Committee review for rare bird sighting of Iceland Gull at Red Rock Dam, 1996
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1996-04-06
|
2000-11-22
|
Rare birds documentation form
|
Records Committee review for an Iceland Gull at Red Rock Dam in Marion County, IA on April 6, 1996. Includes a record review document with votes, correspondence about bird sightings, and a documentation form submitted to the committee.
|
Sinclair, Jim
|
Iceland Gull
|
Red Rock Dam
|
below dam at Red Rock, Marion Co.
|
D.M. River
|
The documentation form by Jim Sinclair is the only one submitted and forms the basis of this record. | Elimination of similar species: This bird did not have the large headed, large billed 'predatory' look of a Glaucous Gull. The overall lightness and the lack of dark primaries and no tail band would eliminate Thayers Gull. | The original documentation form event lasted from 10:54:00/10:56:00.
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Iowa Ornithologists' Union | MS 166
|
11
|
4
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Christmas bird count data report and W. Ross Silcock note to Thomas H. Kent, winter 1987-1988
|
Correspondence Field notes
|
Birds--Research Ornithology--Methodology Ornithology--Societies, etc
|
1987-12-01
|
1988-02-28
|
Manuscript, graphic, and printed material
|
Christmas bird count data report compiled by W. Ross Silcock includes species count totals by county, suggested report format changes and a compilation of species observed and recorded as "write-ins." This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of winter 1987-1988.
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Silcock, W. Ross
|
|
Iowa
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
23
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4
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James P. Sandrock letter to James J. Dinsmore regarding a weather report, July 4, 1986
|
Correspondence
|
Bird watching Ornithology--Societies, etc Weather
|
1986-07-04
|
N/A
|
Manuscript, graphic, and printed material
|
James P. Sandrock letter to James J. Dinsmore regarding his willingness to compile a weather report for summer 1986. The letter also mentions some recent birding trips he has taken. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of summer 1986.
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Sandrock, James P., 1929-
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|
Iowa
|
|
|
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Iowa Ornithologists' Union | MS 166
|
22
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4
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James P. Sandrock letter to James J. Dinsmore regarding a weather report, July 31, 1986
|
Correspondence Field notes Reports
|
Bird watching Ornithology--Societies, etc Weather
|
1986-07-31
|
N/A
|
Manuscript, graphic, and printed material
|
Letter from James P. Sandrock to James J. Dinsmore regarding his weather report for June and July 1986. The attached weather report notes above average temperatures and precipitation in June, his sighting of a Black-headed Grosbeak and his recent birding trips. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of summer 1986.
|
Sandrock, James P., 1929-
|
Black-headed Grosbeak
|
Iowa Lacey-Keosauqua State Park
|
|
|
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Iowa Ornithologists' Union | MS 166
|
22
|
4
|
Records Committee review for rare bird sighting for Lazuli Bunting at George Wyth State Park, 1978
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1978-05-14
|
1994-01-28
|
Rare birds documentation form
|
Records Committee review for a Lazuli Bunting at George Wyth State Park in Black Hawk County, IA on May 14, 1978. Includes a record review document with votes, request for reconsideration, an article in Iowa Bird Life, and a documentation form submitted to the committee.
|
Stone, Tom, Jr.
|
Lazuli Bunting
|
George Wyth Memorial State Park
|
George Wyth State Park
|
Marginal woodland with small stream bordered with, Hedgerows, scrub growth, and wild patches.
|
The documentation form by Tom Stone Jr. is the only one submitted and forms the basis of this record. | Elimination of similar species: Eastern Bluebird - has slender bill and no wingbars. | The original documentation form event lasted from 06:30:00/06:35:00.
|
Iowa Ornithologists' Union | MS 166
|
14
|
4
|
Records Committee review for rare bird sighting of Iceland Gull at Red Rock Reservoir Dam, 1997
|
Administrative records Clippings (information artifacts) Correspondence Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1997-03-19
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for an Iceland Gull at Red Rock Reservoir Dam in Marion County, IA on March 19, 1997. Includes a record review document with votes, photocopies of three photographs, an article in American Birds, an article in Birding, an article in Iowa Bird Life, correspondence about related bird sightings and review, documentation form for a related sighting and review, and a documentation form submitted to the committee for this review.
|
Brees, Aaron
|
Iceland Gull
|
Red Rock Dam
|
Red Rock Dam, Marion County, Iowa
|
rock bar below dam, in association with Ring-billed and Herring Gulls
|
|
Iowa Ornithologists' Union | MS 166
|
11
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4
|
Records Committee review for rare bird sighting of Iceland Gull at Red Rock Reservoir Dam, 1991
|
Administrative records Clippings (information artifacts) Correspondence Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-03-13
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for an Iceland Gull at Red Rock Reservoir Dam in Marion County, IA on March 13, 1991. Includes a record review document with votes, seven photographs, an article in Iowa Bird Life, correspondence about bird sighting and review, and eleven documentation forms submitted to the committee.
|
Schantz, Tim
|
Iceland Gull
|
Red Rock Dam
|
Below Red Rock Dam, Marion County, Iowa
|
|
The documentation form by Tim Schantz is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Ann Johnson, Thomas H. Kent, Diane Porter, Jim Sinclair, Stephen Dinsmore, James Dinsmore, Beth Proescholdt, and Mark Proescholdt were submitted later. Other observers include Dawn DeVore, Dick Tetrault, Jim Scheib, Beth Brown, Michael Porter, Eugene Armstrong, Eloise Armstrong, and many unidentified observers. | Elimination of similar species: [...] Iowa Birds mentions that there is a problem separating Iceland with Thayers. If there was any problem with this bird being anything it was a Glaucous Gull of the same age. However the bird was smaller than the Herring Gulls that were on the roost. Long wings will rule out the rare small race of Glaucous Gull. There are not to [sic] many birds that have primaries lighter than the mantle in the sitting bird.
|
Iowa Ornithologists' Union | MS 166
|
11
|
4
|
Records Committee review for rare bird sighting of Iceland Gull near Lock and Dam 15 near Davenport, 1985
|
Administrative records Clippings (information artifacts) Correspondence Field notes Tables (documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-12-22
|
1993-09-03
|
Rare birds documentation form
|
Records Committee review for a Iceland Gull near Lock and Dam 15 near Davenport in Scott County, IA on December 22, 1985. Includes record review documents with votes, articles in Illinois Birds and Birding as well as American Birds, correspondence about the bird sighting, and four documentation forms submitted to the committee.
|
Petersen, Peter C.
|
Iceland Gull
|
Lock and Dam 15
|
Location: Davenport. County: Scott
|
General: Chanel [sic] of Miss. R., near middle of river when standing. Specific: 1/2 - 3/4 mi. above Lock + Dam 15.
|
The documentation form by Peter C. Petersen forms the basis of this record. Other documentation forms by Ann Barker, Mary Lou Petersen, and Bill Barker were submitted. Other observers include Steve Dinsmore, Paul Martsching, Pete Wickham, Mark Brogie, Lewis Blevins, Corey Blevins, Brett Ashford, and Dale Dickinson. | Elimination of similar species: Glaucous Gull eliminated by size, wing extention [sic] well beyond tail. Flight, headshape, all emphasized by direct comparison with Glaucous Gulls. The next afternoon Bill Barker compared this bird to two different sized Glaucous Gulls and it was smaller than the smaller Glaucous Gull. Plumage lighter than Glaucous also. | The original documentation form event lasted from 11:40:00/12:10:00.
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Iowa Ornithologists' Union | MS 166
|
11
|
4
|
Records Committee review for rare bird sighting for Vermilion Flycatcher near Holstein, 1997
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1997-05-24
|
2000-11-24
|
Rare birds documentation form
|
Records Committee review for a Vermilion Flycatcher near Holstein in Ida County, IA on May 24, 1997. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation letter submitted to the committee.
|
Rector, Curtis L.
|
Vermilion Flycatcher
|
Holstein
|
1531 Harvest Avenue Holstein, Iowa 51025-8117
|
|
The documentation letter by Curtis L. Rector is the only one submitted and forms the basis of this record. Other observers include his parents and nephew. | Elimination of similar species: [...] But I could see right away that it wasn't a cardinal, as it lacked a crest, and it had dark feathers. [...] At this point, I thought it could be a Scarlet Tanager. [...] As I watched it, the bird was taking off from the grass, flying into the air to snatch an insect, then landing on a nearby fence. From this, I could tell it had to be a species of Flycatcher. | The original documentation form event lasted from 14:00:00/14:10:00.
|
Iowa Ornithologists' Union | MS 166
|
12
|
38
|
Records Committee review for rare bird sighting for Sharp-tailed Sparrow near Lost Lake, 1981
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1981-05-23
|
1996-04-24
|
Rare birds documentation form
|
Records Committee review for a Sharp-tailed Sparrow near Lost Lake in Boone County, IA on May 23, 1981. Includes a record review document with votes, correspondence regarding the review and sighting, a request for reconsideration of record, and a documentation form submitted to the committee.
|
Brown, Gordon
|
Nelson's Sharp-tailed Sparrow
|
Lost Lake
|
Upper ledges at Lost Lake
|
|
The documentation form by Gordon Brown is the only one submitted and forms the basis of this record. Another observer was George Brown.
|
Iowa Ornithologists' Union | MS 166
|
13
|
38
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Records Committee review for rare bird sighting for Western Flycatcher at Lake Ahquabi State Park, 1992
|
Administrative records Clippings (information artifacts) Correspondence Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1992-11-14
|
1999-10-15
|
Rare birds documentation form
|
Records Committee review for a Western Flycatcher at Lake Ahquabi State Park in Warren County, IA on November 14, 1992. Includes a record review document with votes, an article in American Birds, excerpts from Western Birds, articles in Pennsylvania birds, an article in Iowa Bird Life, correspondence relevant to bird sighting and review, eight photographs, and four documentation forms submitted to the committee.
|
Johnson, Ann
|
Empidonax Flycatchers
|
Lake Ahquabi State Park
|
Lake Ahquabi State Park, Warren County, IOWA
|
Woodland edge consisting primarily of honeysuckle and junipers
|
The documentation form by Ann Johnson is the earliest and the one that forms the basis of this record. Other documentation forms by Thomas H. Kent, Jim Fuller, and Brian Blevins were submitted later. Other observers include Ross Silcock, Peter Petersen, Kelly McKay, Corey Blevins, Jim Scheib, Jim Sinclair, John Daniel, Tim Schantz, Cal Knight, Bernie Knight, Chuck Fuller, David Youngblut, Beth Brown, Sherry Dragula, Bill Overland, Jane Overland, John Miller, Eugene Armstrong, Eloise Armstrong, and unidentified other observers. | Elimination of similar species: The date of observation is historically good for a vagrant western flycatcher species, so this was in the back of my mind in assessing the characteristics observed. The presence of both eye ring and wing bars, in addition to size and shape, indicate that the bird fits the Empidonax complex. The combination of green back, yellow throat and pure orange lower mandible with no markings would eliminate Least, Hammond's, Dusky, Gray, Buff-breasted, Alder, and Willow Flycatchers. A juvenile Acadian can be eliminated by the short primary extension, color of the wings, size and shape of the eye ring, and active behavior. Only three species are indicated by the green upper parts and yellow under parts. Two are separable only by voice. The choices were between Yellow-bellied Flycatcher and Western (Cordilleran and Pacific-slope) Flycatcher. Back color is greener in Yellow-bellied and more olive in Western. Although the back looked olive, this was rather subjective. According to the Audubon Master Guide, behavior would be more indicative of a Yellow-bellied in that the bird was not flicking both tail and wings. According to Kaufman, however, behavior is quite variable. Three characteristics made me lean more toward Western complex. They were peaked appearance to the head (usually smooth and rounded in Yellow-bellied); almond-shaped eye ring (round, narrow, and more even in Yellow-bellied); and browner wings than eastern Empidonax. The color of the wings is again subjective, but the contrast between wing color and wing bars was less than the black/white (or even black/buff in fall birds) of eastern birds. Even with the variability that may occur in any Empidonax, it is unlikely that these three characteristics, which are common to the Western Flycatcher, would appear simultaneously in a Yellow-bellied Flycatcher. Further support is found in the Audubon Master Guide to Birding where it states in the description of Western Flycatcher, "...olive wash on the breast, flanks, and especially the sides tends to highlight a midventral yellow stripe" - one of the more obvious characteristics when viewed at close range from the front. IF the call notes heard belonged to this bird, it would indicate a Cordilleran Flycatacher, the most likely vagrant. None of us were able, however, to get the bird to call as we were observing it. Cal Knight played a tape and the bird became very agitated but did not call. | The original documentation form event lasted from 11:00:00/14:00:00 on November 14, 1992 and 11:30:00/13:45:00 on November 15, 1992.
|
Iowa Ornithologists' Union | MS 166
|
12
|
35
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Records Committee review for rare bird sighting for Lark Bunting southeast of Scranton, 1999
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1999-06-06
|
2000-11-28
|
Rare birds documentation form
|
Records Committee review for a Lark Bunting southeast of Scranton in Greene County, IA on June 6, 1999. Includes a record review document with votes, e-mail correspondence about the documentation, and a documentation form submitted to the committee.
|
Thelen, Rob
|
Lark Bunting
|
Scranton
|
Greene County,1 mile south of Scranton on Highway 25 ,then 3/4 mile east.
|
Pasture with cows on South side, Row crops on North side
|
The documentation form by Rob Thelen is the only one submitted and forms the basis of this record. Another observer was Marty Thelen. | Elimination of similar species: I don't know of any other bird of this size that has white wing patches. I couldn't find any other info in any of my bird guides. | The original documentation form event lasted from approximately 10:00:00/10:00:06.
|
Iowa Ornithologists' Union | MS 166
|
13
|
34
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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 Black-bellied Whistling-Duck at Columbus Junction, 1999
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1999-04-25
|
2000-11-28
|
Rare birds documentation form
|
Records Committee review of a Black-bellied Whistling-Duck at Columbus Junction in Louisa County, IA on April 25, 1999. Includes a record review document with votes, an e-mail about the bird sighting, and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Black-bellied Whistling-Duck
|
Columbus Junction
|
2 miles north of Columbus Junction, Louisa Co., Iowa
|
A backwater slough adjacent to highway 70 and close to the Iowa River
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Ted Allen, Bill Ohde, and Jim Dinsmore. | Elimination of similar species: Fulvous Whistling-Duck lacks the gray face, orange bill, and white wing patch.
|
Iowa Ornithologists' Union | MS 166
|
8
|
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 Western Sandpiper at Saylorville Reservoir, 1988
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-10-08
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review of a Western Sandpiper at Saylorville Reservoir in Polk County, IA on October 8, 1988. Includes a record review document with votes, correspondence about the bird sighting, and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Western Sandpiper
|
Saylorville Lake
|
Saylorville Reservoir, Polk Co.-north end of reservoir
|
feeding in shallow water adjacent to mudflat with other shorebirds
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include Andy Fix. | Elimination of similar species: see above [...] The bird was roughly 25% smaller than a Pectoral Sandpiper. [...] Note that we saw a single Semipalmated Sandpiper in the same flock of shorebirds. The Semipalmated Sandpiper had a shorter, thicker bill, more of a brown wash on the breast, and frequented the edge of the mudflat rather than wading in the water. | The original documentation form event lasted from 15:30:00/16:45:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
3
|
Records Committee review for rare bird sighting of Western Sandpiper at Big Creek Lake, 1988
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-10-09
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Western Sandpiper at Big Creek Lake in Polk County, IA on October 9, 1988. Includes a record review document with votes, correspondence about the sighting by Guy McCaskie, Kim Eckert, and Bruce Peterjohn, and a documentation form submitted to the committee.
|
Johnson, Ann
|
Western Sandpiper
|
Big Creek Lake
|
Big Creek Wildlife Area, Polk Co., IA
|
Mudflats from low water on freshwater lake
|
The documentation form by Ann Johnson is only one submitted and forms the basis of this record. Other observers include Mike Thomas. | Elimination of similar species: Although I understand the difficulty in identification of fall western sandpipers, the Baird's and white-rumped were eliminated because of wing length. The least sandpiper was eliminated by leg color and bill shape/size. The most difficult elimination was that of the semipalmateds, especially since other semipals were present in the area. After careful observation and comparison, however, the prototypical western sandpiper bill was too obvious to make the bird into a semipalmated. The bill was enough longer and had an obvious droop. The others in the area had varying bill sizes but none had the general shape of this bird. Consequently, I believe this was a late date western sandpiper. | The original documentation form event lasted from approximately 15:00:00/15:10:00.
|
Iowa Ornithologists' Union | MS 166
|
10
|
3
|
Records Committee review for rare bird sighting of Thayer's Gull at Lake Manawa, 1981
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1981-03-19
|
1993-08-26
|
Rare birds documentation form
|
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.
|
Silcock, W. Ross
|
Thayer's Gull
|
Lake Manawa
|
Lake Manawa, Pottawattamie County, Iowa.
|
|
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.
|
Iowa Ornithologists' Union | MS 166
|
11
|
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 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
|
Coralville Dam
|
Coralville Res. Dam, west overlook, Johnson Co. Iowa
|
Reservoir, just above dam, in water and on swimming beach
|
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.
|
Iowa Ornithologists' Union | MS 166
|
11
|
3
|
Records Committee review for rare bird sighting of Black-bellied Whistling-Duck at Big Marsh, 1993
|
Administrative records Clippings (information artifacts) Correspondence Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-11-01
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review of a Black-bellied Whistling-Duck at Big Marsh in Butler County, IA on November 1, 1993. Includes a record review document with votes, correspondence about the bird sighting, two photographs, an article in The Southwestern Naturalist, and a documentation form submitted to the committee.
|
Dinsmore, James J.
|
Black-bellied Whistling-Duck
|
Big Marsh Wildlife Area
|
Big Marsh
|
freshwater marsh
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The documentation form by Jim Dinsmore is the only one submitted and forms the basis of this record. Other observers include Rodney Steere. | Elimination of similar species: Nothing it could be confused with
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Iowa Ornithologists' Union | MS 166
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8
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3
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Records Committee review for rare bird sighting of Thayer's Gull at Coralville Dam, 1981
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Administrative records Correspondence Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1981-11-08
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1993-08-26
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Rare birds documentation form
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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.
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Moore, Francis L.
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Thayer's Gull
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Coralville Dam
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Coralville Reservoir
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Open wate [sic] near small sandy beach near the Dam area, Johnson County
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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.
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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 Correspondence Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1981-12-05
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1993-08-26
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Rare birds documentation form
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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.
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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
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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.
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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 Saylorville Dam, 1981
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Administrative records Correspondence Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1981-12-10
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1993-08-26
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Rare birds documentation form
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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.
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Schaufenbuel, Joseph P.
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Thayer's Gull
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Saylorville Dam
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Above and below Saylorville Dam
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Open water, rocky shore and ice covered pond.
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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.
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Iowa Ornithologists' Union | MS 166
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11
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3
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