Robert Jessen letter and checklist to Vernon M. Kleen regarding winter birds sighted in Mahaska County, April 2, 1975
|
Checklists Correspondence Field notes
|
Bird watching Birds--Identification Birds--Research Ornithology--Methodology
|
1975-04-02
|
N/A
|
Manuscript, graphic, and printed material
|
Robert Jessen letter and checklist sent to Vernon M. Kleen regarded winter birds sighted in Mahaska County, April 2, 1975. The letter noted that unusual birds seen were an Eastern Phoebe and a Dark-Eyed Junco, Oregon Race. These items were used as supporting documentation for the Iowa Ornithologists’ Union Quarterly field report of winter 1974-1975.
|
Jessen, Robert
|
Eastern Phoebe Dark-eyed Junco
|
Mahaska County
|
|
|
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Iowa Ornithologists' Union | MS 166
|
17
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14
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Robert Jessen letter and checklist to Vernon M. Kleen regarding birds sighted during 1974 fall migration, December 1, 1974
|
Checklists Correspondence
|
Bird watching Birds--Identification Birds--Migration Birds--Research Ornithology--Methodology
|
1974-08-01
|
1974-11-30
|
Manuscript, graphic, and printed material
|
Robert Jessen sent a letter and checklist to Vernon M. Kleen regarding birds sighted during 1974 fall migration, December 1, 1974. The checklist was compiled with Keith Layton and covered Oskaloosa, Iowa. These items were used as supporting documentation for the Iowa Ornithologists’ Union Quarterly field report of fall 1974.
|
Jessen, Robert Layton, Keith
|
|
Oskaloosa
|
|
|
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Iowa Ornithologists' Union | MS 166
|
17
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13
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Robert I. Cecil letter to Thomas H. Kent regarding bird sightings, Keokuk, Iowa, spring 1984
|
Correspondence Field notes
|
Bird watching Birds--Research Ornithology--Methodology
|
1984-03-01
|
1984-05-31
|
Manuscript, graphic, and printed material
|
Robert I. Cecil letter to Thomas H. Kent was regarding bird sightings, Keokuk, Iowa, spring 1984. Species seen near Keokuk and marked with a red check mark were a Bald Eagle, Yellow-rumped Warbler, Northern Oriole, Nighthawks, Olive-sided Flycatcher, Ring-billed Gull and Evening Grosbeaks. Also check-marked were Chimney Swifts seen at Ottumwa and a Broad-Winged Hawk near Montrose. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of spring 1984.
|
Cecil, Robert I.
|
Bald Eagle Broad-winged Hawk Ring-billed Gull Chimney Swift Evening Grosbeak Baltimore Oriole Common Nighthawk Olive-sided Flycatcher Yellow-rumped Warbler
|
Keokuk Montrose Ottumwa
|
|
|
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Iowa Ornithologists' Union | MS 166
|
21
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3
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Robert I. Cecil letter to James J. Dinsmore regarding a report on the Purple Gallinule, September 9, 1988
|
Correspondence
|
Birds--Research Ornithology--Societies, etc
|
1988-09-09
|
N/A
|
Manuscript, graphic, and printed material
|
Robert I. Cecil letter to James J. Dinsmore responding to a request to write a short field note on the Purple Gallinule. This item was submitted past the deadline for the Iowa Ornithologists Union Quarterly Report of summer 1988.
|
Cecil, Robert I.
|
Purple Gallinule
|
Iowa
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
23
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6
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Robert F. Vane letter regarding an invitation to the 30th annual convention of the Iowa Ornithologists' Union, April 10, 1952
|
Correspondence
|
Congresses and conventions Ornithology--Societies, etc Ornithology--Study and teaching
|
1952-04-10
|
N/A
|
Manuscript, graphic, and printed material
|
Letter from Robert F. Vane, on behalf of the Cedar Rapids Bird Club, regarding an invitation to the 30th annual convention of the Iowa Ornithologists' Union, April 10, 1952. The letter invites members of the Iowa Ornithologists' Union to the annual convention to be held on the campus of Coe College, May 10 and 11, 1952. This document relates to the program and correspondence about the convention: https://avian.lib.iastate.edu/documents/3072/view, https://avian.lib.iastate.edu/documents/3077/view, https://avian.lib.iastate.edu/documents/3078/view, https://avian.lib.iastate.edu/documents/3081/view, and https://avian.lib.iastate.edu/documents/3082/view.
|
Iowa Ornithologists' Union Vane, Robert F. Cedar Rapids Bird Club
|
|
Burlington Cedar Rapids
|
|
|
|
Frederic Leopold Papers | MS 113
|
2
|
6
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Richard Jule Hollis letter to Thomas H. Kent regarding categories of birds, winter 1982-1983
|
Correspondence Field notes
|
Bird watching Birds--Counting Birds--Research Ornithology--Methodology
|
1982-12-01
|
1983-02-28
|
Manuscript, graphic, and printed material
|
Letter from Richard Jule Hollis to Thomas H. Kent regarding categories of birds. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of 1982-1983.
|
Hollis, Richard Jule
|
|
Iowa
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
20
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6
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Richard Jule Hollis letter to Thomas H. Kent regarding bird sightings, June 1, 1980
|
Correspondence Field notes
|
Bird watching Birds--Research Ornithology--Methodology
|
1980-06-01
|
N/A
|
Manuscript, graphic, and printed material
|
Field notes contributed by Richard Jule Hollis in a letter to Thomas H. Kent, June 1, 1980. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of spring 1980.
|
Hollis, Richard Jule
|
Cooper's Hawk White-eyed Vireo Eastern Bluebird Common Moorhen Ruby-throated Hummingbird American Woodcock Common Nighthawk Ruby-crowned Kinglet Mourning Warbler
|
Hickory Hill Park Iowa City Swan Lake Wildlife Management Area
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
19
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3
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Richard Jule Hollis letter to Hank Zaletel regarding the Iowa Birdline, December 17, 1981
|
Correspondence
|
Bird watching Birds--Counting Ornithology--Methodology Ornithology--Societies, etc
|
1981-12-17
|
N/A
|
Manuscript, graphic, and printed material
|
Richard Jule Hollis letter to Hank Zaletel announcing that the Iowa Birdline is now in operation. The letter includes directions on how to use the Iowa Birdline. This letter was sent to Hank Zaletel in advance of sending a letter to all members of the Iowa Ornithologists' Union.
|
Iowa Ornithologists' Union Hollis, Richard Jule
|
|
Iowa
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
4
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18
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Richard Jule Hollis letter to Hank Zaletel regarding setting up a Bird Hotline, May 27, 1981
|
Correspondence
|
Bird watching Birds--Identification Ornithology--Methodology Ornithology--Societies, etc
|
1981-05-27
|
N/A
|
Manuscript, graphic, and printed material
|
Richard Jule Hollis letter to Hank Zaletel regarding progress made in setting up a Bird Hotline in Iowa. The letter includes a short paragraph on his recent bird sightings such as seeing a Bewick's Wren at Hickory Hill Park in Iowa City, Iowa. The hotline is later known as the Iowa Birdline.
|
Hollis, Richard Jule
|
Bewick's Wren
|
Hickory Hill Park Iowa City
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
4
|
18
|
Richard DeCoster letter to Vernon Kleen regarding Iowa bird observations for winter 1975/1976, April 2, 1976
|
Correspondence Field notes
|
Bird watching Birds--Counting Birds--Research Ornithology--Methodology
|
1976-04-02
|
N/A
|
Manuscript, graphic, and printed material
|
Report from Richard DeCoster detailing bird sightings. This item was used as supporting documentation for the Iowa Ornithologists' Union Quarterly field report of winter 1975/1976.
|
DeCoster, R. J. (Richard Joseph)
|
Common Redpoll Purple Finch Pine Siskin
|
Hickory Hill Park Iowa City Ridgewood Cemetery
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
17
|
15
|
Rich DeCoster letter to Vernon M. Kleen regarding fall 1975 bird sightings around Iowa City, Iowa, December 1, 1975
|
Correspondence Field notes
|
Bird watching Birds--Research Ornithology--Methodology
|
1975-12-01
|
N/A
|
Manuscript, graphic, and printed material
|
Rich DeCoster letter to Vernon M. Kleen was regarding fall 1975 bird sightings around Iowa City, Iowa, December 1, 1975. Most of the sightings were in Hickory Hill Park. This item was used as supporting documentation for the Iowa Ornithologists’ Union Quarterly field report of fall 1975.
|
DeCoster, R. J. (Richard Joseph)
|
Cooper's Hawk Double-crested Cormorant Eastern Towhee Carolina Wren American White Pelican Evening Grosbeak Purple Finch Common Nighthawk Fox Sparrow Pine Siskin Red-breasted Nuthatch Winter Wren Sharp-shinned Hawk
|
Coralville Lake Hickory Hill Park Iowa City Coralville Dam
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
17
|
14
|
Rich DeCoster letter to Thomas H. Kent regarding bird sightings, May 29, 1980
|
Correspondence Field notes
|
Bird watching Birdsongs Birds--Research Ornithology--Methodology
|
1980-05-29
|
N/A
|
Manuscript, graphic, and printed material
|
Field notes contributed by Rich DeCoster in a letter to Thomas H. Kent, May 29, 1980. This item was used as supporting documentation for the Iowa Ornithologists Union Quarterly field report of spring 1980.
|
DeCoster, R. J. (Richard Joseph)
|
Upland Sandpiper Eastern Bluebird Loggerhead Shrike Acadian Flycatcher Kentucky Warbler
|
Johnson County Muscatine County Wildcat Den State Park
|
|
|
|
Iowa Ornithologists' Union | MS 166
|
19
|
3
|
Records Committee review for rare bird sighting of Whooping Crane north of Essex, 1999
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1999-04-11
|
2000-11-28
|
Rare birds documentation form
|
Records Committee review of three Whooping Cranes north of Essex in Page County, IA on April 11, 1999. Includes a record review document with votes, e-mail about the bird sighting, and a documentation form submitted to the committee.
|
Edwards, Chris
|
Whooping Crane
|
Essex
|
North of Essex in northwestern Page County Iowa
|
Flooded agricultural field
|
The documentation form by Chris Edwards is the only one submitted and forms the basis of this record. Other observers include Mary Edwards. | Elimination of similar species: Sandhill Cranes are smaller, gray, and lack a moustachial stripe and black primaries. | The original documentation form event lasted from 12:45:00/12:50:00.
|
Iowa Ornithologists' Union | MS 166
|
9
|
17
|
Records Committee review for rare bird sighting of Whooping Crane east of Davenport, 1983
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1983-04-10
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of a Whooping Crane east of Davenport in Scott County, IA on April 10, 1983. Includes a record review document with votes, a summary of the review, correspondence about bird sightings from Bruce Peterjohn to Tom Kent, and two documentation forms submitted to the committee.
|
Lorenzen, Frederick J. Lorenzen, Ted
|
Whooping Crane
|
Davenport
|
just E. of Davenport John Deere Plant. N. of IPO and W of Jersey Ridge Road
|
small lake
|
The documentation form by Bruce Peterjohn is relaying a report by Fred and Ted Lorenzen is the earliest and the one that forms the basis of this record. | Elimination of similar species: G. Egret - black wing tips, Am. White Pelican- long legs, Sandhill Crane - white plumage, Swan - long legs. | The original documentation form event lasted from 10:45:00/10:50:00.
|
Iowa Ornithologists' Union | MS 166
|
9
|
17
|
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 Western Gull east of Lock and Dam 15 near Davenport, 1989
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-12-11
|
1993-08-06
|
Rare birds documentation form
|
Records Committee review for a Western Gull east of Lock and Dam 15 near Davenport in Scott County, IA on December 11, 1989. Includes a record review document with votes, correspondence relevant to bird sighting and review, and three documentation forms submitted to the committee.
|
Petersen, Peter C.
|
Western Gull
|
Lock and Dam 15
|
On Miss. River chanel [sic] ice between Davenport, Scott Co. IA &+ Rock Isl. Arsenal, RI Co. IL.
|
On ice covered chanel [sic] of Mississippi - 1/4 - 1/2 mi. upstream (East) of Lock + Dam 15.
|
The documentation form by Peter C. Petersen forms the basis of this record. Other documentation forms by Brian Blevins and Gerald White were submitted. Another observers includes Lewis Blevins. | Elimination of similar species: Slaty-backed Gull - Gray mantle merged directly to black tips, trailing white wing edge too narrow, mantle color too dark for g.b. Lesser-Black-bkd Gull - leg color pink, bird too large + heavy Greater Black-bkd. Gull - Bird too small, back not black enough, legs too bright + pink. | The original documentation form event lasted from 15:30:00/15:35:00 on December 11, 1986, 08:20:00/08:25:00 and 09:00:00/09:15:00 on December 12, 1986.
|
Iowa Ornithologists' Union | MS 166
|
11
|
7
|
Records Committee review for rare bird sighting of Tufted Duck at Sweet Marsh, 1980
|
Administrative records Correspondence Field notes Photographs
|
Bird watching Ornithology Ornithology--Societies, etc
|
1980-06-30
|
1994-01-28
|
Rare birds documentation form
|
Records Committee review of a Tufted Duck at Sweet Marsh in Bremer County, IA on June 30, 1980. Includes a record review document with votes, two photos, correspondence about the sighting, and two documentation forms submitted to the committee.
|
Myers, Robert K.
|
Tufted Duck
|
Sweet Marsh
|
Sweet Marsh (Tom Stone, Jr. & I first found bird)
|
marshy area near cattails
|
The documentation form by Robert K. Myers is the earliest and the one that forms the basis of this record. Other documentation forms by Francis L. Moore were submitted . Other observers include Russell Hays, Tom Stone, and Tom Stone, Jr. | Elimination of similar species: May be a ring-neck female or scaup but doesn't look right- probably a hybrid. | The original documentation form event lasted from 19:45:00/20:00:00.
|
Iowa Ornithologists' Union | MS 166
|
8
|
16
|
Records Committee review for rare bird sighting of Tufted Duck at Lake Manawa, 1980
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1980-03-15
|
1993-08-16
|
Rare birds documentation form
|
Records Committee review of a Tufted Duck at Lake Manawa in Pottawattamie County, IA on March 15, 1980. Includes a record review document with votes, internal correspondence about the sighting, and a documentation forms submitted to the committee.
|
Joranson, Eric G.
|
Tufted Duck
|
Lake Manawa
|
Lake Manawa, Council Bluffs, Iowa 150-200 yds from S. Shore
|
|
The documentation form by Eric G. Joranson is the earliest and the one that forms the basis of this record. Other observers include Robert Caughey. | Elimination of similar species: Shot R-n Ducks before. Never seen a Tufted before. R-n duck head "lobey" in contrast with Tufted's crest.
|
Iowa Ornithologists' Union | MS 166
|
8
|
16
|
Records Committee review for rare bird sighting of Trumpeter Swan at Otter Creek Marsh, 1984
|
Administrative records Clippings (information artifacts) Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1984-12-23
|
1993-09-01
|
Rare birds documentation form
|
Records Committee review of three Trumpeter Swans at Otter Creek Marsh in Tama County on December 23, 1984. Includes a record review document with votes, correspondence over the sighting, photos from Iowa Bird Life, and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Trumpeter Swan
|
Otter Creek Marsh State Wildlife Refuge
|
Otter Creek M., Tama Co., IA
|
large riverbottom marsh, central drainage open, ponds partly free of ice. Birds were in pond near east end of south dike.
|
The documentation form by Thomas H. Kent is the earliest and the one that forms the basis of this record. Another observer was Gladys Black. | Elimination of similar species: Bill shape and voice exclude Tundra Swan. | The original documentation form event lasted from 14:40:00/16:05:00.
|
Iowa Ornithologists' Union | MS 166
|
8
|
12
|
Records Committee review for rare bird sighting of Tricolored Heron at Cone Marsh, 1989
|
Administrative records Clippings (information artifacts) Correspondence Field notes Maps (documents)
|
Bird watching Ornithology Ornithology--Societies, etc Wildlife conservation
|
1989-04-29
|
1993-08-05
|
Rare birds documentation form
|
Records Committee review of a Tricolored Heron at Cone Marsh, Louisa County, IA on April 29, 1989. Includes record review documents with votes, articles in Iowa Bird Life and the Loon, maps of Tri-Colored Heron sightings and breeding areas, correspondence about the sighting from Ross Silcock to Carl Bendorf, from to Dick Shaffer to Thomas H. Kent, from Bruce Peterjohn to Thomas H. Kent and committee votes, and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Tricolored Heron
|
Cone Marsh Wildlife Management Area
|
Cone M., Louise Co., IA
|
marsh
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Dick Shaffer. | Elimination of similar species: Size and white belly eliminate other herons. Apparently an immature or non-breeding plumaged adult. | The original documentation form event lasted from 10:50:00/10:59:00.
|
Iowa Ornithologists' Union | MS 166
|
7
|
18
|
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 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 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 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
|