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

General Information Concerning the Ames Audubon Society	Administrative records	Ornithology--Societies, etc Societies--History, organization, etc	1968-01-01	1968-12-31	Manuscript, graphic, and printed material	A summary of information about the Ames Audubon Society which was organized in April, 1968. Included are details about the society's objectives, activities, the cost and benefits of membership, meetings, the 1968 officers and directors, and an application of membership.	Ames Audubon Society		Ames				Big Bluestem Audubon Society \| MS 592	1	11
Draft Constitution and board member list of the Big Bluestem Audubon Society	Administrative records Bylaws (administrative records)	Ornithology--Societies, etc Societies--History, organization, etc	1987-01-20	N/A	Manuscript, graphic, and printed material	Draft constitution for the Big Bluestem Audubon Society, stating the objectives of the organization as well as the by-laws and basic administrative information for the society, January 20, 1987. Also includes a list of the Big Bluestem Audubon Society board members.	Big Bluestem Audubon Society (Ames, Iowa)		Ames				Big Bluestem Audubon Society \| MS 592	1	4
Constitution of the Big Bluestem Audubon Society	Administrative records Bylaws (administrative records)	Ornithology--Societies, etc Societies--History, organization, etc	1982-12-14	N/A	Manuscript, graphic, and printed material	The constitution of the Big Bluestem Audubon Society stating the objectives of the organization as well as the by-laws and basic administrative information for the society. The constitution was passed on December 14, 1982.	Big Bluestem Audubon Society (Ames, Iowa)		Ames				Big Bluestem Audubon Society \| MS 592	1	4
Constitution of the Ames Audubon Society	Administrative records	Ornithology--Societies, etc Societies--History, organization, etc	1970-05-22	N/A	Manuscript, graphic, and printed material	The constitution of the Ames Audubon Society, including 13 articles with administrative information for the society. The constitution with the final amendments and additions passed on May 22, 1970.	Ames Audubon Society		Ames				Big Bluestem Audubon Society \| MS 592	1	1
Record Book of the Iowa Ornithologists' Association	Administrative records Clippings (information artifacts) Correspondence	Ornithology--Societies, etc Meetings Societies--History, organization, etc	1894-06-15	1898-01-16	Manuscript, graphic, and printed material	Record book for the Iowa Ornithological Association. The book covers the period from the group's founding as the Iowa Ornithologist's Association on June 15, 1894 to January 16, 1898. The record book includes meeting minutes, copies of the organization's constitution, financial reports, officer and membership lists, and letters regarding the Iowa Ornithological Association.	Iowa Ornithological Association		Iowa City Iowa Mount Vernon Salem Manchester				Iowa Ornithological Association Records \| MS 581	1	1
The Secretary's Report of the Fairfield Bird Club of Fairfield, Iowa, 1933-1943	Administrative records Clippings (information artifacts) Printed ephemera	Ornithology--Societies, etc Meetings	1933-03-02	1943-03-31	Manuscript, graphic, and printed material	Handwritten minutes for the Fairfield Bird Club from its founding at the Fairfield Public Library on March 2, 1933, through March 1943. The minutes were recorded by the person who held the office of secretary for the club for that year and provide an overview of what happened when the club met, including the locations of the meetings, guests who attended the meetings and subjects of the programs presented. Also includes programs as well as signatures and addresses of attendees of the annual Iowa Ornithologists' Union meetings that were held in Fairfield in 1933 and 1936. Also of note are several newspaper clippings highlighting the activities of the club.	Fairfield Bird Club Calvert, Grace A. Lawson, Lulu Faye Junkin, Paul Sheridan Gilly, Charles McCleary, Ila May Glotfelty Walker, Ruth Wilson, Flora		Fairfield				Fairfield (Iowa) Bird Club Records \| MS 386	1	4
Fairfield Bird Club meeting minutes, 1943-1952	Administrative records	Ornithology--Societies, etc Meetings	1943-04-01	1952-11-20	Manuscript, graphic, and printed material	Handwritten minutes for the Fairfield Bird Club covering the years 1943-1952. The minutes were recorded by the person who held the office of secretary for the club for that year and provide an overview of what happened what happened when the club met, including the locations of the meetings, guests who attended the meetings, subjects of the programs presented, and treasurer's reports.	Fairfield Bird Club Lowell, Margaret Herdliska Scheffel, Iva Williamson, Estella M. Roth, Emma Thada, Lillian B.		Fairfield Waterworks Park Fairfield High School Parsons College				Fairfield (Iowa) Bird Club Records \| MS 386	1	4
Records Committee review for rare bird sighting of Thayer's Gull at Saylorville Dam, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-01-28	1993-08-05	Rare birds documentation form	Records Committee review for a Thayer's Gull at Saylorville Dam in Polk County, IA on January 28, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Johnson, Ann	Thayer's Gull	Saylorville Dam	Saylorville Lake, Polk Co., IA	dam on Des Moines River forming reservoir	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. Other similar gulls do not share this "dove head." The bird was confirmed by the silvery underwings and very little dark coloring on the upper side of the primaries, characteristics not shared by similarly gray-mantled gulls. \| The original documentation form event lasted from 08:40:00/08:40:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting for Thayer's Gull at Red Rock Dam, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-11-08	1993-08-06	Rare birds documentation form	Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on November 8, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Proescholdt, Beth	Thayer's Gull	Red Rock Dam	Red Rock	below dam	The documentation form by Beth Proescholdt is the only one submitted and forms the basis of this record. Another observer includes Mark Proescholdt. \| Elimination of similar species: It was lighter + more evenly colored than a Herring Gull, larger than Ring-billed, too dark for an Iceland too small for a Glaucous. \| The original documentation form event lasted from 08:50:00/09:00:00.	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
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 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 near Lindsay Park in Davenport, 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 near Lindsay Park in Davenport in Scott County, IA on February 18, 1989. Includes a record review document with votes and a documentation form submitted to the committee for this sighting.	Petersen, Peter C.	Thayer's Gull	Lindsay Park	Lindsay Park Boat Club harbor, east edge of Davenport Scott Co.	On ice shelf along Mississippi River, 40 yards from sea wa[...]	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record.Other observers include Walter Zuurdeeg and many unidentified observers. \| Elimination of similar species: [...] Immature gull same size as nearby Herring Gulls. [...] Head smaller than Herrings, bill more slight, black, + not thickened at the tip, compared to Herrings. When wings spread - this was seen twice, the upper surface seemed fairly uniform with no dark tip pattern as in the Herrings. \| The original documentation form event lasted from 09:50:00/09:55:00.	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	1986-12-21	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 near Horse Island near Davenport, 1989	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1989-01-02	1993-08-05	Rare birds documentation form	Records Committee review for a Thayer's Gull near Horse Island near Davenport in Scott County, IA on January 2, 1989. Includes a record review document with votes and a documentation form submitted to the committee.	Petersen, Peter C.	Thayer's Gull	Horse Island	downstream tip of Enchanted Island. Davenport, Scott Co. IA	Mississippi River - edge of open water, Iowa side	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Brian Blevins and Corey Blevins. \| Elimination of similar species: Herring Gull - eye light, wing tips black with white windows, bill larger than Thayers. California Gull - eye light, wing tips black with white windows, yellow legs. \| The original documentation form event lasted from 13:35:00/13:50:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Pool 19 on the Mississippi River near Montrose, 1988	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-12-31	1993-08-04	Rare birds documentation form	Records Committee review for a Thayer's Gull at Pool 19 on the Mississippi River near Montrose in Lee County, IA on December 31, 1988. Includes a record review document with votes and a documentation form submitted to the committee.	Dinsmore, Stephen J.	Thayer's Gull	Pool 19	Pool 19 of Mississippi R., near Montrose, Lee Co., IA	resting on ice and flying over river with other gulls	The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Another observer includes Bart Ballard. \| Elimination of similar species: wing pattern, tail pattern, rounder head, and even color of body eliminates similar Herring Gull. \| The original documentation form event lasted from 10:15:00/10:25:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Saylorville Dam, 1988	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-12-30	1993-08-04	Rare birds documentation form	Records Committee review for two Thayer's Gulls at Saylorville Dam in Polk County, IA on December 30, 1988. Includes a record review document with votes and a documentation form submitted to the committee.	Johnson, Ann	Thayer's Gull	Saylorville Dam	Saylorville Lake, Polk Co., IA	dam on Des Moines River forming reservoir	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. Other similar gulls do not share this "dove head." The adult was confirmed by the silvery underwings, not shared by similarly gray-mantled gulls, and the first year bird was confirmed by the uniformity of its body color. \| The original documentation form event lasted from 15:40:00/15:55:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Dam, 1988	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-12-13	1993-08-04	Rare birds documentation form	Records Committee review for a Thayer's Gull at Red Rock Dam in Marion County, IA on December 13, 1988. Includes a record review document with votes and a documentation form submitted to the committee.	Johnson, Ann	Thayer's Gull	Red Rock Dam	below dam - Lake Red Rock, Marion Co, IA	dam on Des Moines River forming reservoir; open river with islands	The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. \| Elimination of similar species: Ring-billed eliminated by size and leg color. Herring eliminated by head shape and eye color. Iceland eliminated by eye color, mantle color, and size and shape of head. \| The original documentation form event lasted from 15:01:00/15:03:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull north of Jester Park at Saylorville Reservoir, 1988	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-11-30	1993-08-04	Rare birds documentation form	Records Committee review for one to three Thayer's Gulls north of Jester Park at Saylorville Reservoir in Polk County, IA on November 30, 1988. Includes a record review document with votes and a documentation form submitted to the committee.	Dinsmore, Stephen J.	Thayer's Gull	Jester Park	Saylorville Reservoir, Polk Co.-north of Jester Park	feeding in river channel with thousands of other gulls	The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include many unidentified other observers. \| Elimination of similar species: The bill and leg color and size eliminates all gulls except Herring, Thayer's, and Iceland gulls. The uniform dark color of the wings, lack of a lighter "window" on the inner primaries, and the silvery color of the underside of the flight feathers eliminates 1st-winter Herring and Iceland gulls. \| The original documentation form event lasted from 13:38:00/14:55:00 on November 30, 1988.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull north of Jester Park at Saylorville Reservoir, 1988	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-11-30	1993-08-04	Rare birds documentation form	Records Committee review for a Thayer's Gull north of Jester Park at Saylorville Reservoir in Polk County, IA on November 30, 1988. Includes a record review document with votes and a documentation form submitted to the committee.	Dinsmore, Stephen J.	Thayer's Gull	Jester Park	Saylorville Reservoir, Polk Co.-north of Jester Park	feeding in river channel with thousands of other gulls	The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. \| Elimination of similar species: The bill and leg color and size eliminates all gulls except Herring, Thayer's, and Iceland gulls. The uniform dark color of the wings, lack of a lighter "window" on the inner primaries, and the silvery color of the underside of the flight feathers eliminates 1st-winter Herring and Iceland gulls. \| The original documentation form event lasted from 13:38:00/14:55:00.	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 Saylorville Reservoir Dam, 1987	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1987-12-02	1993-09-07	Rare birds documentation form	Records Committee review for two or more Thayer's Gulls at Saylorville Reservoir Dam in Polk County, IA on December 2, 1987. Includes a record review document with votes and five documentation forms submitted to the committee.	Dinsmore, Stephen J.	Thayer's Gull	Saylorville Dam	Saylorville Reservoir, Polk Co.	sitting on ice with other gulls	The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Francis L. Moore, Steve Dinsmore, and Mark Proescholdt were submitted. Other observers include Andy Fix, Beth Proescholdt, Eugene Armstrong, Eloise Armstrong, Bob Cecil, Bery Engebretsen, Jim Sinclair, and many unidentified observers. \| Elimination of similar species: The overall dark color of the bird and the lack of paler wingtips eliminates first-winter Iceland Gull. The translucent flight feathers, uniform body color, lack of a "window" on the upperwing, smaller, thinner bill, rounder head, dark smudge around the eye, and smaller size eliminates first-winter Herring Gull. The uniform body color, lack of a dark tail band, and translucent flight feathers eliminates first-winter Lesser Black-backed Gull. \| The original documentation form event lasted from 08:00:00/08:05:00.	Iowa Ornithologists' Union \| MS 166	11	3
Records Committee review for rare bird sighting of Thayer's Gull at Red Rock Reservoir, 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 Red Rock Reservoir in Marion County, IA on January 3, 1987. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Thayer's Gull	Lake Red Rock	Red Rock Res., Marion Co., Iowa	reservoir, partly frozen	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Tom Staudt, Steve Dinsmore, and unidentified other observers. \| Elimination of similar species: The uniform coloration and lack of dark wing tips were the main marks used to separate it from Herring Gull. \| The original documentation form event lasted from approximately 13:30:00/13:45:00.	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 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