Documents • Iowa State University • Avian Archives of Iowa Online

Title	Genres	Topics	Date (Start)	Date (End)	Type	Description	Creator/Author	Birds	Locations	Locality	Habitat	Remarks

Records Committee review for rare bird sighting for MacGillivray's Warbler at Eagle City County Park, 1995	Administrative records Clippings (information artifacts) Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1995-06-02	2000-11-20	Rare birds documentation form	Records Committee review for a MacGillivray's Warbler at Eagle City County Park in northern Hardin County, IA on June 2, 1995. Includes two record review documents with votes, an article in Iowa Bird Life, an article in Illinois Birds, an article in Birds of Missouri, two articles from The Auk, an article in Meadowlark, correspondence relevant to bird sighting and review, and a documentation form submitted to the committee.	Proescholdt, Mark	MacGillivray's Warbler	Eagle City Park	Eagle City Co. Park - (North Hardin County)	Brushy tangle along park's edge up the hill from Iowa River Greenbelt	The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. \| Elimination of similar species: In "Spring" this should not be mistaken for any other warbler. A ♂ Mourning Warbler lacks the vivid eye crescents. A Connecticut Warbler has a complete white eyering and no black smudge on the upper breast and the gray head is a lighter gray color. In "fall" the female and immature Mourning Warblers may show a thin, nearly complete eyering (which I have seen on Mournings in the fall), but this could not be mistaken for the vivid white eye crescents of this breeding-plumaged male MacGillivray's Warbler along with its very noticeable black smudge on its upper breast below its gray hood. \| The original documentation form event lasted from approximately 11:15:00/11:15:05.	Iowa Ornithologists' Union \| MS 166	13	26
Records Committee review for rare bird sighting of Ringed Kingfisher at Lock and Dam 14 in Scott County, 1994	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1994-01-07	1996-04-25	Rare birds documentation form	Records Committee review for a Ringed Kingfisher at Lock and Dam 14 in Scott County, IA on January 7, 1994. Includes a record review document with votes and a documentation letter submitted to the committee.	Dee, Debbie	Ringed Kingfisher	Lock and Dam 14	[...] Iowa side of Lock and Dam 14.		The documentation form by Debbie Dee is the only one submitted and forms the basis of this record. \| The original documentation form event occurred at 09:30:00 for several minutes.	Iowa Ornithologists' Union \| MS 166	12	26
Thomas Stephens letter to Philip DuMont regarding preparing an article for publication, October 16, 1931	Correspondence	Bird watching Ornithology--Study and teaching Copy editing	1931-10-16	N/A	Manuscript, graphic, and printed material	Letter from Thomas Stephens to Philip DuMont dated October 16, 1931. In this letter Stephens discusses some editorial changes he made to an article DuMont had submitted for publication, reports sighting an American Egret at Browns Lake, and gives DuMont some advice on pursuing his education.	Stephens, Thomas Calderwood, 1876-1948	Great Egret	Browns Lake Des Moines				Philip A. Dumont Papers \| MS 153	1	27
Thomas Stephens letter to Philip DuMont regarding the status of the Long-billed Curlew in the Sioux City region, January 30, 1933	Correspondence	Bird watching Birds--Geographical distribution	1933-01-30	N/A	Manuscript, graphic, and printed material	Letter from Thomas Stephens to Philip DuMont dated January 30, 1933. In this letter Stephens discussing publishing DuMont's paper on the Little Brown Crane and says that the only evidence of the Long-billed Curlew in the Sioux City region comes from taxidermist A.J. Anderson who has reported sighting the bird and is familiar with it from handling specimens obtained from Nebraska.	Stephens, Thomas Calderwood, 1876-1948	Long-billed Curlew Sandhill Crane	Sioux City				Philip A. Dumont Papers \| MS 153	1	27
Records Committee review for rare bird sighting of Sharp-shinned Hawk at Jackson Township, 1989	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-07-19	1993-08-05	Rare birds documentation form	Records Committee review of a Sharp-shinned Hawk at Jackson Township in Hardin County on July 19, 1989. Includes a record review document with votes, correspondence about the bird sighting by David Conrads to Carl Bendorf, and a documentation form submitted to the committee.	Conrads, David J.	Sharp-shinned Hawk	Jackson Township	NE 1/4 of NE 1/4 SEC 13 T-88N R-20W Jackson Twp Hardin Co.	Upland forest, steep ravine	The documentation form by David J. Conrads is the earliest and the one that forms the basis of this record. Other observers include Keith Franzen and Nixon Wilson. \| Elimination of similar species: Due to its significantly smaller size than a Cooper's Hawk, we concluded that it was a HY male Sharp-shinned Hawk. We also listened to "A Field Guide to Bird Songs" and although the Sharp-shinned recording was that of 175 "kek-kek-kek" warning/alarm call, the Cooper's Hawk recording was that of a food begging call which was very similar but of a significantly lower pitch than that of the bird we observed. \| The original documentation form event lasted from 14:30:00/14:31:00.	Iowa Ornithologists' Union \| MS 166	8	27
Records Committee review for rare bird sighting for Summer Tanager at Pleasant Valley, 1990	Administrative records Correspondence Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1990-12-02	1996-04-24	Rare birds documentation form	Records Committee review for a Summer Tanager at Pleasant Valley in Scott County, IA on December 2, 1990. Includes a record review document with votes, photographs, a request for reconsideration, letter from Gary H. Rosenberg to Carl J. Bendorf and a documentation form submitted to the committee. The species is recorded as Hepatic Tanager on the documentation, but confirmed as Summer Tanager by the IOU Records Committee.	Blevins, Brian L.	Summer Tanager	Pleasant Valley	244-56 Valley Dr. Pleasant Valley, Scott Co., Iowa	Feeder situation where it was eating berries, suet and bed water in heated bath	The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Another observer was Lewis Blevins. \| Elimination of similar species: Summer, Scarlet, Western Tanager. Scarlet Tanager was eliminated by the lack of dark wing and the orange-green instead of yellow-green. Western Tanager was eliminated by the lack of wing bars. Summer Tanager: this was the closest of the three especially considering the cooperi form found in the southwest. The large bill in common to both species if we consider the cooper form of the summer, however, the color of the mandible overall more dark than light lends the pull towards hepatic. The dark, brown orange-green also pulled me over to the hepatics in respect to the ones I have observed in Arizona. Call note also differs. \| The original documentation form event lasted from 13:15:00/14:20:00.	Iowa Ornithologists' Union \| MS 166	13	28
Records Committee review for rare bird sighting for Summer Tanager at Iowa City, 1998	Administrative records Clippings (information artifacts) Correspondence Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1998-01-11	2000-11-24	Rare birds documentation form	Records Committee review for a Summer Tanager at Iowa City in Johnson County, IA on January 11, 1998. Includes a record review document with votes, a photo, an article in Field Notes, an article in Iowa Bird Life, an e-mail from Mary E. Noble to Jim Fuller, and two documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Summer Tanager	Iowa City	315 S. 7th Ave. Iowa City, Iowa	Urban area, small back yard with several feeders and brush cover.	The documentation form by Thomas H. Kent is the earliest and the one that forms the basis of this record. Another documentation form by Jim Fuller was submitted later. Other observers include Mary Noble and Dick Tetrault. \| Elimination of similar species: The overall coloration and plainness indicate a female or immature bird. The lack of prominent gray in the auriculars and light bill color argue against Hepatic Tanager. The bill length, head shape, and relative paleness of the wings favor Summer Tanager over Scarlet Tanager. The lack of prominent wing bars appears to exclude Western Tanager. The apparent lack of orange tint suggest a bird from the West or perhaps an immature. The Summer Tanager photographed at Pleasant Valley in Scott County on 2 December 1990 was more orange-yellow than the Iowa City bird. The latest Midwest record for Scarlet Tanager in books of these states was 26 Nov in Minnesota. There are a few winter records of Summer Tanager: in Tennessee (4) 5, 18, 21 Dec and 2 Feb-15 Mar; in Michigan 1 Dec; in Missouri 3-10 Jan 1987. There are also winter records from Florida and the Texas Coast. This does not constitute an exhaustive search for winter records. \| The original documentation form event lasted from 08:10:00/08:15:00.	Iowa Ornithologists' Union \| MS 166	13	28
Records Committee review for rare bird sighting for Western Tanager at Hope Martin Memorial Park, 1981	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1981-10-08	1993-08-16	Rare birds documentation form	Records Committee review for a Western Tanager at Hope Martin Memorial Park in Black Hawk County, IA on October 8, 1981. Includes a record review document with votes, a summary of the review, a letter from Bruce Peterjohn to Tom Kent, a letter from Bob Myers to Tom Kent, a letter from Francis Moore to Tom Kent, and two documentation forms submitted to the committee.	Myers, Robert K.	Western Tanager	Hope Martin Memorial Park	Hope Martin Park, Waterloo, Ia. (Part of Waterloo Greenbelt)	Riverbottom Timber on edge of park - brushy area First seen in top of willow thicket, then flew to top of oak in the park.	The documentation form by Robert Myers is the earliest and the one that forms the basis of this record. Another documentation form by Francis L. Moore was submitted later. \| Elimination of similar species: Fall scarlet tanager is possible - see attached page. My first thought was that this was late for a scarlet Tanager and when I looked closer I saw the wing bars. My second thought was that someone told me that one of a hunderd [sic] ♀ scarlets have wing bars. I also knew the Peterson Guide says some scarlets have two wing bars. When I went home that night I was anything but convinced the bird was a western tanager even though most literature states wing bars = western tanager. When I got home I phoned Fancis Moore and he went to the park and was able to relocate the bird. Even though he had never seen western tanagers before, Francis thought this was one. His enthusiasm prompted me to research further. I am now also convinced that this bird was indeed a western tanager no matter how unlikely it seems. Ironically, my first western tanager, a male seen April 26, 1980 at Forney Lake, was also with a mixed flock of yellow-rump + palm warblers. \| The original documentation form event lasted from 16:00:00/16:15:00.	Iowa Ornithologists' Union \| MS 166	13	29
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	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	Iowa Ornithologists' Union \| MS 166	8	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 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 for Black-headed Grosbeak at Warren County Conservation Board Headquarters, 1996	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1996-05-12	2000-11-22	Rare birds documentation form	Records Committee review for a Black-headed Grosbeak at Conservation Board Headquarters in Warren County, IA on May 12, 1996. Includes a record review document with votes, a letter from Ken Brock to Tom Kent and a documentation form submitted to the committee.	Sinclair, Jim	Black-headed Grosbeak	Lake Ahquabi State Park	Warrren Co. Conservation Board Headquarters	small deciduous trees	The documentation form by Jim Sinclair is the only one submitted and forms the basis of this record. Another observer was David Youngblut. \| Elimination of similar species: Several [female symbol] Rose-breasted Grosbeaks were present for comparison. \| The original documentation form event lasted from 06:45:00/07:00:00.	Iowa Ornithologists' Union \| MS 166	14	3
Records Committee review for rare bird sighting for Black-headed Grosbeak at Marble Rock, 1983	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1983-05-09	1993-09-01	Rare birds documentation form	Records Committee review for a Black-headed Grosbeak at Marble Rock in Floyd County, IA on May 9, 1983. Includes a record review document with votes, a letter from Bruce Peterjohn to Tom Kent, a summary of the review, and a documentation form submitted to the committee.	Knoop, Pearl	Black-headed Grosbeak	Marble Rock	Floyd county, about a mile south of Marble Rock, along river	Narrow tree and shrubby area along the Shellrock. This type of habitat extends along the river on both sides. More bushy in some places than others. There are nearby cultivated fields and tree areas.	The documentation form by Pearl Knoop is the only one submitted and forms the basis of this record. \| Elimination of similar species: female rose-breased [sic] grosbeak. \| The original documentation form event lasted from 08:00:00/08:10:00.	Iowa Ornithologists' Union \| MS 166	14	3
Records Committee review for rare bird sighting for Black-headed Grosbeak at Elkhart, 1982	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1982-11-23	1993-09-01	Rare birds documentation form	Records Committee review for a Black-headed Grosbeak at Elkhart in Polk County, IA on November 23, 1982. Includes a record review document with votes, a letter from Bruce Peterjohn to Tom Kent, a summary of the review, and a documentation form submitted to the committee.	Mosman, Dean	Black-headed Grosbeak	Elkhart	2 M.E. Elkhart, IA	in wooded area	The documentation form by Darwin (Dean) Mosman is the only one submitted and forms the basis of this record. Other observers include Mike Mosman and Diane Mosman. \| Elimination of similar species: Female Rose-breasted Grosbeak only species close to same appearance. No voice heard, behavior and habitat the same. Color and streaking only difference. \| The original documentation form event lasted from 07:15:00/07:30:00.	Iowa Ornithologists' Union \| MS 166	14	3
Records Committee review for rare bird sighting for Black-headed Grosbeak at Decorah, 1982	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1982-07-29	1993-09-01	Rare birds documentation form	Records Committee review for a Black-headed Grosbeak at Decorah in Winneshiek County, IA on July 29, 1982. Includes a record review document with votes, a letter from Bruce Peterjohn to Tom Kent, a summary of the review, and a letter from Jeri McMahon to Tom Kent.	McMahon, Jeri	Black-headed Grosbeak	Decorah	Trout River, near Decorah		A letter from Jeri McMahon to Tom Kent forms the basis of this record. \| Elimination of similar species: The female rose-breasted grosbeak, plus juveniles, were also present that day, so I could compare the 2 species very well. It was not an im. male rose-breasted, although I saw several of those.	Iowa Ornithologists' Union \| MS 166	14	3
Records Committee review for rare bird sighting for Black-headed Grosbeak at Little Swan Lake, 1982	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1982-07-14	1993-09-01	Rare birds documentation form	Records Committee review for a Black-headed Grosbeak at Little Swan Lake in Dickinson County, IA on July 14, 1982. Includes a record review document with votes, a summary of the review, a letter from Bruce Peterjohn to Tom Kent, and a documentation form submitted to the committee.	Harr, Douglas C.	Black-headed Grosbeak	Christopherson Slough / Little Swan Lake Wildlife Management Area	Woods, N. edge Little Swan Lake, Dickinson Co., Iowa (near Superior)	General: woodlands near lakeshore. Specific: bare branch understory of plum thicket (deep shade), at edge of planting of 25 ft. Austrian pines and black walnut trees.	The documentation form by Douglas C. Harr is the earliest and the one that forms the basis of this record. \| Elimination of similar species: Rose-breasted grosbeak (female)--little or no yellow-tan color to breast & more heavily spotted or streaked. Blue Grosbeak (female)--a more uniform, unstreaked brown or tan. \| The original documentation form event lasted from 13:22:00/13:23:00.	Iowa Ornithologists' Union \| MS 166	14	3
Records Committee review for rare bird sighting for Black-headed Grosbeak at Rush Lake, 1982	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1982-05-20	1993-09-01	Rare birds documentation form	Records Committee review for a Black-headed Grosbeak at Rush Lake in Palo Alto County, IA on May 20, 1982. Includes a record review document with votes, a summary of the review, a letter from Ann Sernett to Thomas Kent, and a documentation form submitted to the committee.	Harms, Ronald	Black-headed Grosbeak	Rush Lake	South side Rush Lake, Palo Alto Co. and Mable [sic] Grous grove, Pocahontas Co.	Open woods	The documentation form by Ronald Harms is the only one submitted and forms the basis of this record. Other observers were Ann Luther, Mabel Grous, Ken Sernett and Ann Sernett. \| Elimination of similar species: there were many [female symbol] Rose-brested [sic] around to compare.	Iowa Ornithologists' Union \| MS 166	14	3
Records Committee review for rare bird sighting for Black-headed Grosbeak at Amana Woods, 1982	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1982-05-10	1993-09-01	Rare birds documentation form	Records Committee review for a Black-headed Grosbeak at Amana Woods in Iowa County, IA on May 10, 1982. Includes a record review document with votes, a letter from Bruce Peterjohn to Tom Kent, and two documentation forms submitted to the committee.	Silcock, W. Ross	Black-headed Grosbeak	Amana Woods	Amana Woods	Deciduous woods. Trail through woods along ridge.	The documentation form by W. Ross Silcock is the earliest and the one that forms the basis of this record. Another documentation form by Thomas Kent was submitted later. Other observers include Tom Staudt and Carl Bendorf. \| The original documentation form event lasted from 18:30:00/18:32:00.	Iowa Ornithologists' Union \| MS 166	14	3
Records Committee review for rare bird sighting 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 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 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	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 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