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 of Sabine's Gull at the riverfront of Davenport, 1991	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1991-10-13	1994-02-27	Rare birds documentation form	Records Committee review for two Sabine's Gull at the riverfront of Davenport in Scott County, IA on October 13, 1991. Includes a record review document with votes, an article in Meadowlark, excerpts from American Birds, article and front page from Iowa Bird Life, seven photographs, and seven documentation forms submitted to the committee.	Peiser, Richard H.	Sabine's Gull	Davenport	Riverfront, Davenport, IA	Stone embankment + river	The documentation form by Richard H. Peiser forms the basis of this record. Other documentation forms by Thomas H. Kent, Reid Allen, Peter C. Petersen, James Fuller, Randall Pinkston, and Ann Johnson were submitted. Other observers include John King, Dick Tetrault, Tim Schantz, Brian Blevins, Ann Barker, Jim Scheib, Mary Lou Peterson, Babs Padelford, Loren Padelford, Pam Allen, and many unidentified other observers. \| Elimination of similar species: The upperwing pattern is so striking as to eliminate other gull species, even in the Juvenile Black hood of adult, slight fork of tail + black band on imm. tail band helped. Yellow tip of bill on adult clincher \| The original documentation form event lasted from 14:00:00/18:00:00.	Iowa Ornithologists' Union \| MS 166	11	9
Rare bird documentation form for Goose species at Riverside Cemetery in Marshalltown, 1993	Field notes Forms (documents)	Birds--Identification Ornithology Rare birds	1993-10-06	1993-11-16	Rare birds documentation form	Rare bird documentation form for a Goose species at Riverside Cemetery in Marshalltown in Marshall County, IA on October 6, 1993.	Stegmann, Mike	Ducks, Geese, Swans	Riverside Cemetery	Riverside Cemetary [sic], Marshalltown, Marshall County, Iowa.	Man made pond	The documentation form by Mike Stegmann is the only one submitted and forms the basis of this record. Other observers include Garry Brandenburg. \| Elimination of similar species: Canada Goose and Snow Goose - show characteristics of both species. \| The original documentation form event lasted from 13:30:00/16:00:00.	Iowa Ornithologists' Union \| MS 166	32	27
Records Committee review for rare bird sighting for Pine Grosbeak at Spencer, 1995	Administrative records Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1995-02-27	2000-11-20	Rare birds documentation form	Records Committee review for two Pine Grosbeaks at Spencer in Clay County, IA on February 27, 1995. Includes a record review document with votes, a photo, and three documentation forms submitted to the committee.	Schoenewe, Lee A.	Pine Grosbeak	Spencer	Riverside cemetary & residence at Prospect Dr., Spencer	Pine trees & Ash trees in suburban neighborhood & cemetary	The documentation form by Lee A. Schoenewe is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller and Thomas H. Kent were submitted later. Other observers include Doug Harr and Dick Tetrault. \| Elimination of similar species: White-winged Crossbill: bill shape, size & long tail. \| The original documentation form event lasted from 07:40:00 and 16:45:00/17:05:00.	Iowa Ornithologists' Union \| MS 166	14	13
Rare bird documentation form for Merlin at Riverside Township in Fremont County, 1978	Field notes	Birds--Identification Ornithology--Societies, etc Rare birds	1978-03-19	N/A	Rare birds documentation form	Rare bird documentation form for a Merlin at Riverside Township in Fremont County, IA on March 19, 1978.	Silcock, W. Ross	Merlin	Riverside Township	Riverside Twp Fremont Co, Iowa	Nishnabotna River Bottom, Corn stubble fields (frozen)	The documentation form by W. Ross Silcock is the only one submitted and forms the basis of this record. \| Elimination of similar species: Accipiters- Wings were pointed, not rounded, and bird did not sail, but flew with rapid, continuous strokes. \| The original documentation form event lasted from 09:30:00/09:30:10.	Iowa Ornithologists' Union \| MS 166	33	32
Records Committee review for rare bird sighting for Great-tailed Grackle at Riverton Area, 1984	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1984-05-15	1993-09-01	Rare birds documentation form	Records Committee review for a Great-tailed Grackle at Riverton Area in Fremont County, IA on May 15, 1984. Includes a record review document with votes and a documentation form submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Great-tailed Grackle	Riverton Wildlife Management Area	Riverton A, near headquarters, Fremont Co., IA	open area with a few trees near water area	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Another observer was Ross Silcock. \| Elimination of similar species: The large size, long tail and voice convince me it was not a Common Grackle. Unfortunately, we were not able to study the bird for more than a minute. \| The original documentation form event lasted from 06:30:00/06:32:00.	Iowa Ornithologists' Union \| MS 166	14	9
Rare bird documentation form for Whimbrel at Riverton Area, 1987	Field notes	Birds--Identification Ornithology Rare birds	1987-08-01	1987-11-26	Rare birds documentation form	Rare bird documentation form for a Whimbrel at Riverton Area in Fremont County, IA on August 1 - 2, 1987.	Dinsmore, Stephen J.	Whimbrel	Riverton Wildlife Management Area	Riverton A., Fremont Co.	feeding on large 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 Bart Ballard and Ross Silcock. \| Elimination of similar species: No other shorebird has the combination of large size, long, decurved bill, dark eyeline, and buffy flight feathers. \| The original documentation form event lasted from 14:10:00/16:00:00.	Iowa Ornithologists' Union \| MS 166	34	12
Records Committee review for rare bird sighting of Glossy Ibis at Riverton Area, 1995	Administrative records Clippings (information artifacts) Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1995-05-18	2000-11-18	Rare birds documentation form	Records Committee review of two Glossy Ibis at Riverton Area in Fremont County, IA on May 18, 1995. Includes a record review document with votes, two photos, an article in Iowa Bird Life, and four documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	White Ibis	Riverton Wildlife Management Area	Riverton A., Fremont Co., IA	Controlled water area long Nishnabotna River and flooded fields.	The documentation form by Thomas H. Kent is the earliest and the one that forms the basis of this record. Other documentation forms by Jim Fuller, Babs Padelford, Loren Padelford, and Ross Silcock were submitted later. Other observers include Dick Tetrault, B.J. Rose, and Doug Rose. \| Elimination of similar species: An immature White-faced Ibis could lack the red eye, red legs, and white facial feathering of an adult and be confused with a Glossy Ibis. An immature white-faced would lack the blue facial skin and would likely show some brownish feathers. The color differences were clear-cut and observed under identical viewing condition. \| The original documentation form event lasted from 13:30:00/13:40:00, 14:20:00/15:25:00, and, on May 19 from 08:40:00/08:45:00.	Iowa Ornithologists' Union \| MS 166	7	23
Rare bird documentation form for Merlin at Riverton Area, 1988	Field notes	Birds--Identification Ornithology Rare birds	1988-12-27	1988-12-28	Rare birds documentation form	Rare bird documentation form for a Merlin at Riverton Area in Fremont County, IA on December 27, 1988.	Dinsmore, Stephen J.	Merlin	Riverton Wildlife Management Area	Riverton A., Fremont Co., IA	flying over large lake	The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include Ross Silcock. \| Elimination of similar species: The small size, lack of any obvious facial pattern, and lack of dark axillars eliminates Peregrine and Prairie Falcons. The brown upperparts, barred tail, streaked underparts, and more powerful wingstrokes eliminate Am. Kestrel. \| The original documentation form event occurred at approximately 08:15:00/08:17:00.	Iowa Ornithologists' Union \| MS 166	33	32
Records Committee review for rare bird sighting of Ruff at Riverton Area, 1995	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1995-04-01	2000-11-18	Rare birds documentation form	Records Committee review of a Ruff at Riverton Area in Fremont County, IA on April 1, 1995. Includes a record review document with votes and three documentation forms submitted to the committee.	Fuller, James L	Ruff	Riverton Wildlife Management Area	Riverton Area (Fremont County)		The documentation form by Jim Fuller is the earliest and the one that forms the basis of this record. Other documentation forms by Ross Silcock, and Thomas H. Kent were submitted later. Other observers include Tim Schantz, James Scheib, Eugene Armstrong, Eloise Armstrong, Pam Allen, and Reid Allen. \| Elimination of similar species: Differences from Pectoral pointed out in description. Yellowlegs have different leg color, breast pattern is more spotted, and the bill is longer and thinner. \| The original documentation form event lasted from 07:35:00/08:20:00.	Iowa Ornithologists' Union \| MS 166	10	9
Records Committee review for rare bird sighting of Long-billed Curlew at Riverton Area, 1989	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology--Societies, etc Rare birds	1989-04-11	1993-08-05	Rare birds documentation form	Records Committee review of a Long-billed Curelew at Riverton Area in Fremont County, IA on April 11, 1989. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation form submitted to the committee.	Priebe, Carl	Long-billed Curlew	Riverton Wildlife Management Area	Riverton Area Fremont County, IA	Shallow water area 3-4" of about 1-2 acres surrounded by mudflats	The documentation form by Carl Priebe is the only one submitted and forms the basis of this record. \| Elimination of similar species: Whimbrel - The curlew was larger than the Marbled Godwit, Whimbrels would be about the same size or slightly smaller. Marbled Godwit - This bird has an upturned bill Hudsonian Godwit - This bird has an upturned bill No other bird has a bill comparable to the length and downward curve of the Long-billed Curlew \| The original documentation form event lasted from 15:45:00/16:15:00.	Iowa Ornithologists' Union \| MS 166	9	24
Records Committee review for rare bird sighting of Red Knot at Riverton Area, 1992	Administrative records Field notes	Bird watching Ornithology Ornithology--Societies, etc	1992-05-13	1994-10-18	Rare birds documentation form	Records Committee review for two Red Knots at Riverton Area in Fremont County, IA on May 13, 1992. Includes a record review document with votes and two documentation forms submitted to the committee.	Kent, Thomas H. (Thomas Hugh), 1934-	Red Knot	Riverton Wildlife Management Area	Riverton Area, Fremont Co., Iowa	Shallow mud flats with pool at low water level.	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 Jim Scheib and Dick Tetrault. \| Elimination of similar species: The chunky body, relatively short legs, feeding pattern, and lack of white rump led me away from Stilt Sandpiper. The bill was much too short for dowitcher. The bill was not curved enough for Curlew Sandpiper. These birds appeared to be partially molted into alternate plumage. \| The original documentation form event lasted from 08:35:00/08:45:00 and 10:30:00.	Iowa Ornithologists' Union \| MS 166	10	1
Rare bird documentation form for Ross' Goose at Riverton Game Management Area, 1981	Field notes Forms (documents)	Birds--Identification Ornithology Rare birds	1981-12-19	1982-01-19	Rare birds documentation form	Rare bird documentation form for a Ross' Goose at Riverton Game Management Area in Fremont County, IA on December 19, 1981.	Silcock, W. Ross	Ross' Goose	Riverton Wildlife Management Area	Riverton G.M.A. Fremont Co. Iowa	Swamp, surrounded by farmland	The documentation form by Ross Silcock is the only one submitted and forms the basis of this record. Other observers include Barb Wilson. \| Elimination of similar species: Snow Goose eliminated by 1 size comparison 2 wing beat speed 3 possibly by reduced black in underwings tips - juvenile? \| The original documentation form event lasted from 15:30:00/15:35:00.	Iowa Ornithologists' Union \| MS 166	32	28
Records Committee review for rare bird sighting for Great-tailed Grackle at Riverton Area, 1983	Administrative records Clippings (information artifacts) Field notes	Bird watching Ornithology Ornithology--Societies, etc	1983-07-01	1993-09-01	Rare birds documentation form	Records Committee review for three to four Great-tailed Grackles at Riverton Area in Fremont County, IA on July 1, 1983. Includes a record review document with votes, an article in Iowa Bird Life, and five documentation forms submitted to the committee.	Silcock, W. Ross	Great-tailed Grackle	Riverton Wildlife Management Area	Riverton GMA		The documentation form by Ross Silcock is the earliest and the one that forms the basis of this record. Other documentation forms by Francis L. Moore, Barbara L. Wilson, Peter Petersen, and Mike Newlon were submitted later. Other observers include Tayce Pederson, Homer Pederson, Jean Pederson, Mary Lou Petersen, Corey Blevins, Joe Schaufenbuel, Steve Dinsmore, Gordon Jones, Carl Bendorf, and Thomas Staudt. \| Elimination of similar species: During most sightings, chucking sounds typical of grackles were heard, but on the initial sighting, squealing sounds apparently characteristic of this species were heard.	Iowa Ornithologists' Union \| MS 166	14	9
Rare bird documentation form for Ross' Goose at Riverton Game Management Area, 1984	Field notes Forms (documents)	Birds--Identification Ornithology Rare birds	1984-12-28	1985-01-04	Rare birds documentation form	Rare bird documentation form for two Ross' Geese at Riverton Game Management Area in Fremont County, IA on December 28, 1984.	Silcock, W. Ross	Ross' Goose	Riverton Wildlife Management Area	Riverton GMA, Fremont Co, IA	Lake; Roosting Area for Snow Geese	The documentation form by Ross Silcock is the only one submitted and forms the basis of this record. Other observers include Ione Getscher. \| Elimination of similar species: Snow Goose -Bill Shape, Size & Color. \| The original documentation form event lasted from 10:20:00/10:40:00.	Iowa Ornithologists' Union \| MS 166	32	28
Rare bird documentation form for Greater Scaup at Riverton Game Management Area, 1984	Field notes	Birds--Identification Ornithology Rare birds	1984-12-28	1985-01-04	Rare birds documentation form	Rare bird documentation form for three Greater Scaups at Riverton Game Management Area in Fremont County, IA on December 28, 1984.	Silcock, W. Ross	Greater Scaup	Riverton Wildlife Management Area	Riverton GMA, Fremont Co, IA	Lake	The documentation form by Ross Silcock is the only one submitted and forms the basis of this record. Other observers include Ione Getscher. \| Elimination of similar species: Lesser Scaup, Ringnecked Duck. ID as Greater Scaup but confirmed when birds flew and displayed very obvious white wingstripe extending to outer primaries. \| The original documentation form event lasted from 10:20:00/10:40:00.	Iowa Ornithologists' Union \| MS 166	33	10
Records Committee review for rare bird sighting of Sharp-tailed Sandpiper at Riverton Wildlife Management Area, 1994	Administrative records Correspondence Field notes Photographs	Bird watching Ornithology Ornithology--Societies, etc	1994-05-15	1996-04-25	Rare birds documentation form	Records Committee review of a Sharp-tailed Sandpiper at Riverton Wildlife Management Area in Fremont County, IA on May 15, 1994. Includes a record review document with votes, correspondence about the bird sighting, seven photographs and photocopies of them, and a documentation form submitted to the committee.	Silcock, W. Ross	Sharp-tailed Sandpiper	Riverton Wildlife Management Area	Riverton GMA, Fremont County		The documentation form by Ross Silcock is the only one submitted and forms the basis of this record. Other observers include B.J. Rose, Roger Rose, and Doug Rose. \| Elimination of similar species: [...] It resembled a Pectoral Sandpiper, but differed in the following ways: the crown was streaked, and showed noticeable rufous coloration in the feathering; the off-white superciliary stripe was lengthy and broadened towards the rear; the breast markings were dense as in a Pectoral but did not show a clearcut ending at the whitish belly, but instead ended indeterminately by gradually fading out. [...] Once ready to record, we flushed the bird and it gave a soft series of notes, somewhat like a Lesser Yellowlegs, but rather flat and unmelodious. This call was most unlike the harsh, grating call of a Pectoral Sandpiper. [...] Plumage, time of year, call upon flushing, and key plumage differences from Pectoral Sandpiper, cited above, led us to identify this bird as an adult Sharp-tailed Sandpiper. \| The original documentation form event occurred around 10:30:00.	Iowa Ornithologists' Union \| MS 166	10	4
Rare bird documentation form for Wilson's Phalarope at Riverton Game Management Area, unknown year	Field notes	Birds--Identification Ornithology Rare birds	N/A	N/A	Rare birds documentation form	Rare bird documentation form for two Wilson's Phalaropes at Riverton Game Management Area in Fremont County, IA on July 15, unknown year.	Silcock, W. Ross	Wilson's Phalarope	Riverton Wildlife Management Area	Riverton GMA, Fremont County	It was feeding near the shoreline in dead weeds, mostly on foot, but occasionally in deeper water.	The documentation form by Ross Silcock is the only one submitted and forms the basis of this record. Other observers include Bob Myers and Francis Moore. \| Elimination of similar species: Other species we considered (albeit briefly) were: Ruff: eliminated by bill size and shape (thin and straight, rather than fairly heavy and thick-based with a slight droop); also eliminated by phalarope feeding actions. Some far out of range Tringa (eg Wood Sandpiper or juv Redshank): legs relatively short; also phalarope feeding actions.	Iowa Ornithologists' Union \| MS 166	34	29
Records Committee review for rare bird sighting of Black-headed Gull at Riverton State Wildlife Management Area, 1981	Administrative records Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1981-04-26	1993-09-01	Rare birds documentation form	Records Committee review for a Black-headed Gull at Riverton State Wildlife Management Area in Fremont County, IA on April 26, 1981. Includes a record review document with votes, summary of the review, correspondence from Barb Wilson to Tom Kent about the sighting, and four documentation forms submitted to the committee.	Bray, Tanya	Black-headed Gull	Riverton Wildlife Management Area	Riverton State Wildlife Management Area Fremont County, Iowa		The documentation form by Tanya Bray forms the basis of this record. Other documentation forms by Babs Padelford, Loren Padelford, Rick Wright, and W. Ross Silcock were submitted. \| Elimination of similar species: Bonoparte's [sic] Gull; The main differences noted were the size and shape of the bill(much longer and heavier than Bonoparte's [sic]) and the style of flight.	Iowa Ornithologists' Union \| MS 166	10	21
Records Committee review for rare bird sighting of Semipalmated Sandpiper at Riverton Wildlife Area, 1988	Administrative records Clippings (information artifacts) Correspondence Field notes	Bird watching Ornithology Ornithology--Societies, etc	1988-03-27	1993-08-04	Rare birds documentation form	Records Committee review of a Semipalmated Sandpiper at Riverton Wildlife Area in Fremont County, IA on March 27, 1988. Includes a record review document with votes, correspondence about the sighting, entries in an unidentified field guide, and two documentation forms submitted to the committee.	Dinsmore, Stephen J.	Semipalmated Sandpiper	Riverton Wildlife Management Area	Riverton W.A., Fremont Co.	feeding with other shorebirds on large mudflat area	The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Anotther documentation form by Ross Silcock was submitted later. \| Elimination of similar species: similar species eliminated above [...] This bird was slightly bigger than a Least and was much chunkier. The bird had dark legs, seen in direct comparison with the dark legs of Baird's Sandpipers and the yellowish legs of the Least Sandpipers. This bird was also still in basic plumage, making it much paler in color than the other peeps. [...] The bill was straight, dark, and much thicker at the base and the tip than the bill of a Baird's or Least sandpiper [sic]. \| The original documentation form event lasted from 09:20:00/09:35:00.	Iowa Ornithologists' Union \| MS 166	10	2
Rare bird documentation form for Greater Yellowlegs at Riverton Wildlife Area, 1988	Field notes	Birds--Identification Ornithology Rare birds	1988-03-06	1988-03-27	Rare birds documentation form	Rare bird documentation form for a Greater Yellowlegs at Riverton Wildlife Area in Fremont County, IA on March 6, 1988.	Dinsmore, Stephen J.	Greater Yellowlegs	Riverton Wildlife Management Area	Riverton W.A., Fremont Co.	feeding with Killdeer on mudflat	The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include Bart Ballard, Ross Silcock, Babs Padelford, and Loren Padelford. \| Elimination of similar species: The size, yellow legs, long bill, and body color eliminates all other shorebirds except Lesser Yellowlegs. Lesser Yellowlegs was eliminated by the call, the large size, and the bill shape. \| The original documentation form event lasted from 09:45:00/10:30:00.	Iowa Ornithologists' Union \| MS 166	34	7
Rare bird documentation form for Wilson's Phalarope at Riverton Wildlife Area, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-03-28	N/A	Rare birds documentation form	Rare bird documentation form for a Wilson's Phalarope at Riverton Wildlife Area in Fremont County, IA on March 28, 1991.	Dinsmore, Stephen J.	Wilson's Phalarope	Riverton Wildlife Management Area	Riverton W.A., Fremont Co., IA		The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Other observers include Tanya Bray. \| Elimination of similar species: The body shape, bahavior, [sic] and plumage identify the bird as a phalarope. Bill shape eliminates other phalaropes, which would be even more unlikely on this date. \| The original documentation form event lasted from 09:30:00/10:45:00.	Iowa Ornithologists' Union \| MS 166	34	29
Records Committee review for rare bird sighting of Eurasian Wigeon at Riverton Area, 1991	Administrative records Field notes Forms (documents)	Bird watching Ornithology Ornithology--Societies, etc	1991-03-06	1993-07-17	Rare birds documentation form	Records Committee review of a Eurasian Wigeon at Riverton Area in Fremont County, IA on March 6, 1991. Includes a record review document with votes, an Iowa Bird Life article, and two documentation forms submitted to the committee.	Dinsmore, Stephen J.	Eurasian Wigeon	Riverton Wildlife Management Area	Riverton W.A., Fremont Co., IA		The documentation form by Stephen J. Dinsmore is the earliest and the one that forms the basis of this record. Another documentation form by Eugene Armstrong was submitted later. Other observers include Eloise Armstrong, and Ross Silcock \| Elimination of similar species: The combination of reddish head with buffy crown, gray mantle and flanks, black rump and undertail, and stubby, bluish-gray bill eliminates other waterfowl. \| The original documentation form event lasted from 10:35:00/11:05:00, 12:05:00/12:25:00, and 16:40:00/17:22:00.	Iowa Ornithologists' Union \| MS 166	8	14
Rare bird documentation form for Baird's Sandpiper at Riverton Wildlife Area, 1991	Field notes	Birds--Identification Ornithology Rare birds	1991-03-11	1991-03-13	Rare birds documentation form	Rare bird documentation form for two Baird's Sandpipers at Riverton Wildlife Area in Fremont County, IA on March 11, 1991.	Dinsmore, Stephen J.	Baird's Sandpiper	Riverton Wildlife Management Area	Riverton W.A., Fremont Co., IA		The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. \| Elimination of similar species: The dark legs and smaller size eliminates Pectoral Sandpiper. Dark legs also eliminates Least Sandpiper. Other peeps were eliminated by the combination of bill shape, long, slender body shape, scaly upperparts, and call note. \| The original documentation form event lasted from 08:15:00/09:10:00.	Iowa Ornithologists' Union \| MS 166	34	22
Rare bird documentation form for Peregrine Falcon at Riverton Wildlife Area, 1984	Field notes	Birds--Identification Ornithology Rare birds	1984-04-27	N/A	Rare birds documentation form	Rare bird documentation form for a Peregrine Falcon at Riverton Wildlife Area in Fremont County, IA on April 27, 1984.	Moore, Francis L.	Peregrine Falcon	Riverton Wildlife Management Area	Riverton W.A., Fremont County, IA	Open marshland	The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Ray Cummins. \| Elimination of similar species: Merlin is smaller without dark mustache patch in front of eye that this bird had. \| The original documentation form event lasted from approximately 14:30:00/14:35:00.	Iowa Ornithologists' Union \| MS 166	33	34
Rare bird documentation form for Common Yellowthroat at Riverton Wildlife Area, 1998	Field notes	Birds--Identification Ornithology Rare birds	1998-12-29	1999-01-04	Rare birds documentation form	Rare bird documentation form for a Common Yellowthroat at Riverton Wildlife Area in Fremont County, IA on December 29, 1998.	Dinsmore, Stephen J.	Common Yellowthroat	Riverton Wildlife Management Area	Riverton W.A., Fremont County, Iowa	grassy edge of a frozen canal	The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. Other observers include W. Ross Silcock. \| Elimination of similar species: The combination of an incomplete mask, pattern of yellow on the underparts, lack of wingbars, long tail, and leg color is diagnostic for Common Yellowthroat. \| The original documentation form event lasted from 14:25:00/14:40:00.	Iowa Ornithologists' Union \| MS 166	35	40