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 Sprague's Pipit at Kettleson's Hogback Wildlife Management Area, 1994	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1994-04-09	1996-04-25	Rare birds documentation form	Records Committee review for a Sprague's Pipit at Kettleson's Hogsback Wildlife Management Area in Dickinson County, IA on April 9, 1994. Includes a record review document with votes, a follow up letter from Lee Schoenewe to the IOU Records Committee, and a documentation form submitted to the committee.	Schoenewe, Lee A.	Sprague's Pipit	Kettleson Hogsback Wildlife Management Area	Kettleson's Hogsback WPA., Dickinson Co.	Grassland along shallow marsh	The documentation form by Lee A. Schoenewe is the only one submitted and forms the basis of this record. Another observer was LaVonne Foote. \| Elimination of similar species: American Pipit - Leg color; Behavior; Breast color + streaking; streaked back. \| The original documentation form event lasted from 10:50:00/11:15:00.	Iowa Ornithologists' Union \| MS 166	13	13
Records Committee review for rare bird sighting for Sprague's Pipit at Union Hills Wildlife Management Area, 1998	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1998-04-22	2000-11-24	Rare birds documentation form	Records Committee review for a Sprague's Pipit at Union Hills Wildlife Management Area in Cerro Gordo County, IA on April 22, 1998. Includes a record review document with votes, amended comments on the review, a memo about bird sighting, e-mail correspondence about the bird sighting, and two documentation forms submitted to the committee.	Fischer, Carolyn J.	Sprague's Pipit	Union Hills Wildlife Management Area	Union Hills Waterfowl Production Area So. of Ventura, Cerro Gor[...] Co	Rolling hills, open short grassy area, + cultivated field	The documentation form by Carolyn Fischer forms the basis of this record. Another documentation form by Jan L. Walter was submitted. Other observers include Patricia Hansen and Tim Phalen. \| Elimination of similar species: Ruled out Sparrows + Longspurs, this bird did not have a conical beak. American Pipit, this bird did not have dark legs, no tail bobbing, not a heavy ear patch. \| The original documentation form event lasted from 10:00:00/10:25:00.	Iowa Ornithologists' Union \| MS 166	13	13
Records Committee review for rare bird sighting for Sprague's Pipit at Waterman Creek Area, 1998	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1998-02-22	2000-11-24	Rare birds documentation form	Records Committee review for a Sprague's Pipit at Waterman Creek Area in O'Brien County, IA on February 22, 1998. Includes a record review document with votes and a documentation form submitted to the committee.	Schoenewe, Lee A.	Sprague's Pipit	Waterman Creek	Waterman Creek Area O'Brien Co	Open, weedy field with old corn stubble	The documentation form by Lee A. Schoenewe is the only one submitted and forms the basis of this record. Another observer was Nancy P. Schoenewe. \| Elimination of similar species: Smith's Longspur - song in flight [...]s rattle call Water Pipit and Vesper Sparrow - call note and song in high, circling flight light underwings with buffy body \| The original documentation form event occurred around 14:45:00.	Iowa Ornithologists' Union \| MS 166	13	13
Records Committee review for rare bird sighting for Sprague's Pipit southwest of Delhi, 1977	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1977-05-01	1994-01-28	Rare birds documentation form	Records Committee review for a Sprague's Pipit southwest of Delhi in Delaware County, IA on May 1, 1977. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation submitted to the committee.	Serbousek, Lillian	Sprague's Pipit	Delhi	[...] 7 miles N.E. of Ryan - 5 miles S.W. of Delhi on plowed corn field adjacent to hayfields and pasture		The documentation form by Lilian Serbousek is the only one submitted and forms the basis of this record. \| Elimination of similar species: [..] -seen with Water Pipits, Vesper Sparrow and Golden Plover and Horned Larks - looked quite similar to Vesper Sparrow-white outer tail feathers, buffy above and streaked, white below with streaks on breasts & sides (couldn't see bill well at this distance) [...] close enough to see bill was long and slender (like Vesper's pushed down and forward) also was pinkish and dark at tip (lower mandible was lightest) was sure it wasn't a Water Pipit because of streaked back, breast coloration and leg coloration - bird walked and ran, Savannah and Vesper Sparrow that were also on the ground hopped, flight was undulating and was more graceful compared to low buzzy flights of the two sparrows, the wings appeared pointed and long (as a whole the bird looked more slender) not as vocal as the Water Pipits, notes were higher and thinner (1 syllable instead of two) then Water Pipits	Iowa Ornithologists' Union \| MS 166	13	13
Records Committee review for rare bird sighting for Sprague's Pipit north of Missouri Valley, 1978	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1978-04-11	1994-01-28	Rare birds documentation form	Records Committee review for a Sprauge's Pipit north of Missouri Valley in Harrison County, IA on April 11, 1978. Includes a record review document with votes, a request for reconsideration of record, an article in Iowa Bird Life, and a documentation form submitted to the committee.	Gochenour, Ruth A.	Sprague's Pipit	Missouri Valley	Two miles north of Missouri Valley, Iowa	Plowed field - corn stubble - Soil wet from rain - deep grassy ditches on both sides of rd.	The documentation form by Ruth Gochenour is the only one submitted and forms the basis of this record. Another observer was Naomi Svenningsen. \| Elimination of similar species: American Pipit, Vesper Sparrow - Legs-flesh colored - not clark - Lacked cinnamon shoulder patches - and streaking on back as described in #6. \| The original documentation form event lasted from 11:00:00/11:10:00.	Iowa Ornithologists' Union \| MS 166	13	13
Records Committee review for rare bird sighting for Steller's Jay at Lake MacBride, 1987	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1987-06-30	1993-09-07	Rare birds documentation form	Records Committee review for a Steller's Jay at Lake MacBride in Johnson County, IA on June 30, 1987. Includes a record review document with votes and a documentation form submitted to the committee.	Hollis, Doris A.	Stellar's Jay	Lake MacBride	Lake MacBride, Johnson Co	Brush - 'Island' on dam	The documentation form by Doris A. Hollis is the only one submitted and forms the basis of this record. \| Elimination of similar species: Not the right color blue + no white on it. \| The original documentation form event lasted from 18:30:00/18:35:00.	Iowa Ornithologists' Union \| MS 166	12	42
Records Committee review for rare bird sighting for Steller's Jay north of Ellsworth, 1994	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1994-10-08	1996-04-25	Rare birds documentation form	Records Committee review for a Steller's Jay north of Ellsworth in Hamilton County, IA on October 8, 1994. Includes a record review document with votes and a documentation form submitted to the committee.	Hill, Jaclyn	Stellar's Jay	Ellsworth	3 1/2 miles north of Ellsworth, IA	Homestead of 60 soft maples, (old); 100 evergreen planted 1990; 4 evergreen planted in 1968; 100 highbush cranberrie planted 1990	The documentation form by Jaclyn Hill is the only one submitted and forms the basis of this record. Another observer was Gerald Hill. \| Elimination of similar species: It was the shape of the Blue Jay in the yard also. It had no white on it at all. \| The original documentation form event lasted from 10:00:00/10:30:00.	Iowa Ornithologists' Union \| MS 166	12	42
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 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 Swainson's Warbler at Brookside Park in Ames, 1994	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1994-05-12	1996-04-25	Rare birds documentation form	Records Committee review for a Swainson's Warbler at Brookside Park in Ames in Story County, IA on May 12, 1994. Includes a record review document with votes, field notes, and a documentation form submitted to the committee.	Mayfield, John E.	Swainson's Warbler	Brookside Park	Brookside Park, Ames IA	Open park land, Large trees with grass beneath.	The documentation form by John Mayfield is the only one submitted and forms the basis of this record. \| Elimination of similar species: Chipping sparrow: observed warbler had less vibrant color, was less active, warbler bill not sparrow bill. Palm warbler: no yellow or yellowish color, no tail wagging definitely not a palm warbler. \| The original documentation form event lasted from 12:50:00/12:55:00.	Iowa Ornithologists' Union \| MS 166	13	25
Records Committee review for rare bird sighting of Thayer's Gull at Bettendorf, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-02-18	1993-08-05	Rare birds documentation form	Records Committee review for a Thayer's Gull at Bettendorf in Scott County, IA on February 18, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Johnson, Ann	Thayer's Gull	Bettendorf	Mississippi River, Bettendorf, Scott Co., IA	seen from shore just south of I80 in area of cabins	The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. \| Elimination of similar species: The primary identification was done through the size and shape of the head. The bird was lighter in color than the first-winter herring gulls in the same area and the wing pattern on both upper and lower sides eliminated herring, ring-billed and Iceland gulls. \| The original documentation form event lasted from 12:42:00/12:42:00.	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	1981-12-06	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 Credit Island, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-11-24	1993-08-06	Rare birds documentation form	Records Committee review for a Thayer's Gull at Credit Island in Scott County, IA on November 24, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Petersen, Peter C.	Thayer's Gull	Credit Island	Credit Island harbor	ice covered Miss. River backwater	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Jim Fuller, Brian Blevins, Corey Blevins, Lewis Blevins, Thomas H. Kent, John Daniels, and Ken Lowder. \| Elimination of similar species: Herring Gull - dark brown primary tips, lacked silvery below wings. lack smudge on head \| The original documentation form event lasted from 08:45:00/08:50:00 and 15:30:00/15:45:00.	Iowa Ornithologists' Union \| MS 166	11	3
Record Committee review for rare bird sighting of Thayer's Gull at Gray's Lake, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-11-30	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Gray's Lake in Polk County, IA on November 30, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Cecil, Robert I.	Thayer's Gull	Grays Lake	Gray's Lake, Des Moines, Polk County, IA	Lake with some open water	The documentation form by Bob Cecil is the only one submitted and forms the basis of this record. Another observer includes Mary Michelle Cecil. \| Elimination of similar species: Herring much more "contrasty", including dark secondary bar, dark tail band, very dark towards ends of primaries. This bird was smaller than 1st wither [sic] Herring, as well as paler brown. \| The original documentation form event lasted from 10:30:00/11:00:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at IPL Ponds in Pottawattamie County, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-10-29	1993-08-06	Rare birds documentation form	Records Committee review for a Thayer's Gull at IPL Ponds in Pottawattamie County, IA on October 29, 1989. Includes a record review document with votes and three documentation forms submitted to the committee.	Grenon, Alan G.	Thayer's Gull	MidAmerican Energy Ponds	Iowa, Pottawattamie County, south of Council Bluffs, the north pond of the Iowa Power and Light plant's ponds, two miles north of the county line (three miles north of the Bellevue exit on I-29), just east of Interstate highway 29.		The documentation form by Alan G. Grenon forms the basis of this record. Other documentation forms by Babs Padelford and Ross Silcock were submitted. Other observers include B.J. Rose, Doug Rose, Loren Padelford as well as four unidentified observers. \| Elimination of similar species: The most likely similar species are Iceland and Herring Gulls. Iceland Gull (first winter) is eliminated by the combination of the following characters: wing-tip darker than body at rest; wing-tip and secondaries darker above than remainder of wing; tail marked above by a darker band covering most of the distal portion; a possible darker area around the eye. Herring Gull (first winter) is eliminated by the combination of the following characters: wing-tip at rest brown-tan, not black; wing-tip and secondary bar tan in flight, not black; primaries with thin, pale tips; tail bar tan, not black; bill all dark; bill and head delicate; bill thin. Glaucous Gull would have been larger relative to Ring-billed Gulls, with a massive bill light with a dark tip, large head, and wing-tips and secondaries would not have been darker than other upper parts. California Gull (first winter) would have black or near-black primaries, secondaries, tail, and a mostly pale bill with a black tip. Glaucous-winged Gull and hybrids thereof eliminated by bill and head structure and body size all smaller/finer in this bird, tail and wing pattern. AG. \| The original documentation form event occurred around 09:30:00 on October 29, 1989, from 11:30:00/12:15:00 and around 14:00:00 on the October 30, 1989.	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 Lock 15 in Davenport, 1986	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1986-12-24	1993-09-07	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock 15 in Davenport in Scott County, IA on December 24, 1986. Includes a record review document with votes and a documentation form submitted to the committee.	Petersen, Peter C.	Thayer's Gull	Lock and Dam 15	Lock 15, Davenport	General: Mississippi River Specific: just below roller dam	The documentation form by Peter C Petersen is the only one submitted and forms the basis of this record. Other observers include Tim Dwyer and Jerry White. \| Elimination of similar species: Herring Gull - wing tips not black on this bird, + its eye was dark. Iceland (Humelius) - wing tips not as pale grey, legs not pale pink. \| The original documentation form event lasted from 10:10:00/10:15:00 on December 24, 1986 and 14:40:00/14:42:00 on December 25, 1986.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 15 in Davenport, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-12-17	1993-08-06	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 15 in Davenport in Scott County, IA on December 17, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Blevins, Brian L.	Thayer's Gull	Lock and Dam 15	Just above the Lock + Dam 15 (Davenport, Ia)	Frozen ice above the dam in the Mississippi River	The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey Blevins and Lewis Blevins. \| Elimination of similar species: Herring Gull - eliminated by the dark eye and by the lack of black on the primary tips. \| The original documentation form event lasted from 15:30:00/15:42:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 15 in Davenport, 1988	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-01-01	1993-08-04	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 15 in Davenport in Scott County, IA on January 1, 1988. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Thayer's Gull	Lock and Dam 15	Lock + Dam 15, Davenport, Scott Co, IA	Mississippi R.	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Francis Moore and Dick Kraemer. \| Elimination of similar species: [...] There were many first year Herrings that were darker with dark wingtips. We also saw, but not at same time, a larger, slightly lighter gull without tail band that we identified as a first year Glaucous Gull. It was consistently larger than Herring and heavier bodied. Uniform color, white flight feathers from below separate bird from Herring. Size and tail band separate from Glaucous. \| The original documentation form event lasted from 10:15:00/10:45:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 15 near Davenport, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-12-31	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 15 near Davenport in Scott County, IA on December 31, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Thayer's Gull	Lock and Dam 15	Lock + Dam 15, Davenport, Scott Co., IA	Mississippi River	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. \| Elimination of similar species: Translucent flight feathers and upper wing pattern and lighter tail band separate from Herring Gull \| The original documentation form event lasted from 14:30:00/14:35:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 19 at Keokuk, 1991	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1991-02-16	1993-07-17	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 19 at Keokuk in Lee County, IA on February 16, 1991. Includes a record review document with votes and a documentation form submitted to the committee.	Allen, Reid I.	Thayer's Gull	Lock Number 19	Lock & Dam #19 - Keokuk, Iowa	River channel with open water below dam extending 3/4 mile from dam	The documentation form by Reid Allen is the only one submitted and forms the basis of this record. Other observers include Pam Allen, Eugene Armstrong, and Eloise Armstrong. \| Elimination of similar species: First-winter Herring gulls (many were present) had blackish wingtips. Juvenile Iceland gull wingtips lack dark edging on primaries as do those on Glaucous-winged Gull. \| The original documentation form event lasted from approximately 10:30:00/10:50:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 19, 1986	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1986-12-17	1994-11-04	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 19 in Keokuk in Lee County, IA on December 17, 1986. Includes a record review document with votes, summary of review, and a documentation form submitted to the committee.	Cecil, Robert I.	Thayer's Gull	Lock Number 19	Lock and Dam 19, Keokuk, Lee Co., Iowa	River Rapids	The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. Another observer includes Francis L. Moore. \| Elimination of similar species: Herring Gull:Bill size, pattern of wingtips on upper and under surface of wings. Ringbill: size. Kumlien's Iceland: black rather than gray in wintip [sic] (Tom Kent, personal communication). Adult Glaucous has no black in wingtips. \| The original documentation form event occurred at various times on the various dates listed on the documentation form.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 19, 1986	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1986-12-21	1993-09-07	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 19 in Keokuk in Lee County, IA on December 21, 1986. Includes a record review document with votes, a summary of the review, and a documentation form submitted to the committee.	Cecil, Robert I.	Thayer's Gull	Lock Number 19	Lock and Dam 19, Miss. River, Keokuk, Lee Co, Iowa	River rapids.	The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. Another observer includes Doug Reeves. \| Elimination of similar species: First year Herring much more "contrasty"--see above. Kumlien's Iceland Gull...According to Seabirds (Harrison), 1st year Iceland is more pale, tail uniform gray. Overall body coloration is more like 1st year Glaucous--bird I saw was darker than 1st year Glaucous. [...] The important thing about this uniformity that the accompanying first year Herring Gulls had much contrast, showing whitish head, darker wingtips, dark at the tip of the underwings (sometimes), and most obviously, much darker secondaries, creating a dark trailing edge to the wings. Their general color was a darker chocolatey brown. [...] BILL: Pinkish--noticably [sic] smaller that [sic] Herrings. This is pretty subjective, but at about 2/3 of the way across the river at the dam (maybe one third mile) the bill on a Herring can be easily seen through my scope. [...] A very indistinct darkening (wing, upper surface) of the first two or three primaries. The mark had to be looked for to be seen--on the Herring it was much more evident. [...] At some times, the bird showed secondaries that were slightly darker than the rest of the wing. Slightly should be emphasized--at no time was it even close to the darkness of the secondaries of the first year Herring. [...] There was a very slight and indistinct darkening to the first two or three primaries, but this had to be looked for carefully. I have also seen a number of 1st year Herring Gulls that fit this description, but all have a distinct window at base of primaries. \| The original documentation form event occurred at various times during the date range of sightings on the documentation form.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Lock and Dam 19 in Keokuk, 1987	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1987-01-03	1993-09-07	Rare birds documentation form	Records Committee review for a Thayer's Gull at Lock and Dam 19 in Keokuk in Lee County, IA on January 3, 1987. Includes a record review document with votes and two documentation forms submitted to the committee.	Moore, Francis L.	Thayer's Gull	Lock Number 19	Below lock and dam 19, Keokuk, Lee Co., Iowa	Open water below lock and dam 19	The documentation form by Francis L. Moore forms the basis of this record. Another documentation form by Steve Dinsmore was submitted. Another observer includes Robert Cecil. \| Elimination of similar species: Herring Gull has more black in the primaries with a grayer mantle, a larger bill and heavier and bigger head. The under surface of the primaries of a Herring is also darker and has the darkness well into the primaries from the tips. \| The original documentation form event lasted from 10:30:00/10:40:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at North Overlook Beach at Red Rock Reservoir, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-11-06	1993-08-06	Rare birds documentation form	Records Committee review for a Thayer's Gull at North Overlook Beach at Red Rock Reservoir in Marion County, IA on November 6, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Johnson, Ann	Thayer's Gull	North Overlook Park	North Overlook Beach, Lake Red Rock, Marion Co, IA	Sandy beach on man-made reservoir	The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. \| Elimination of similar species: Iceland Gull - basically eliminated by darker color and narrow chocolate edges to outer primaries. Kumlien's - presence of tail band would seem to eliminate Herring - eliminated by combination of: structure and size of body and bill; shape of head; more uniform coloration above, especially lighter colored primaries; light flight feathers from below contrasting with darker wing lining; lighter color of tail band \| The original documentation form event lasted from 10:30:00/10:35:00.	Iowa Ornithologists' Union \| MS 166	11	3