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

Rare bird documentation form for Greater Scaup at Willow Slough, 1985	Field notes	Birds--Identification Ornithology Rare birds	1985-03-30	1985-04-01	Rare birds documentation form	Rare bird documentation form for five Greater Scaups at Willow Slough in Mills County, IA on March 30, 1985.	Moore, Francis L.	Greater Scaup	Willow Slough State Game Management Area	Willow Slough, Mills Co., Iowa	Open part of lake	The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Robert I. Cecil. \| Elimination of similar species: Female Lesser Scaup do not have white 'ear patch' as these females did. All five birds had a somewhat larger headed looks with the head looking 'fat' and rounded not pointed as Lesser Scaup would have appeared. \| The original documentation form event lasted from 15:25:00/15:55:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Swan Lake in 1994	Field notes	Birds--Identification Ornithology Rare birds	1994-04-01	N/A	Manuscript, graphic, and printed material	Rare bird documentation form for a Greater Scaup at Swan Lake in Johnson County, IA on April 1, 1994.	Pinkston, Randall, 1956-	Greater Scaup	Swan Lake				Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Saylorville Lake, 1988	Field notes	Birds--Identification Ornithology Rare birds	1988-11-20	1988-11-27	Rare birds documentation form	Rare bird documentation form for two Greater Scaups at Saylorville Lake in Polk County, IA on November 20, 1988.	Thomas, Michael K.	Greater Scaup	Saylorville Lake	Highway 17 and Des Moines River - North end of Saylorville Lake - Polk Co., IA	river flowing into Saylorville lake, fairly shallow, and plants on both sides	The documentation form by Mike Thomas is the only one submitted and forms the basis of this record. Other observers include Ann Johnson. \| Elimination of similar species: Lesser scaup (size, head shape, head color on male, whiter sides on male in direct comparison to lesser scaups. Side by side comparison with lesser scaup was thankfully easy. The male's rounded head contrasted clearly with the more pointed heads of the lesser scaup. Also, the dark green head of male was visible. The male birds sides were whiter than male lesser scaup's sides and the difference in size was noticeable. \| The original documentation form event lasted from 15:45:00/16:15:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Big Creek State Park, 1988	Field notes	Birds--Identification Ornithology Rare birds	1988-05-17	1988-05-27	Rare birds documentation form	Rare bird documentation form for one to two Greater Scaups at Big Creek State Park in Polk County, IA on May 17, 1988.	Dinsmore, Stephen J.	Greater Scaup	Big Creek State Park	Big Creek State Park, Polk Co.	with other ducks near muddy area at north end of lake	The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include Andrew Fix. \| Elimination of similar species: Lesser Scaup eliminated above. The birds were bigger than nearby Blue-winged Teal, but smaller than a Mallard. Identified the bird as a Greater Scaup by the very large, almost spatulate bill, very wide bill nail, large size compared to a Mallard (the bird wasn't much smaller than the Mallard), rounded head (not peaked like a Lesser Scaup), and white wing stripe extending on to the primaries (seen when the bird preened). \| The original documentation form event lasted from 10:05:00/10:22:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Big Creek State Park, 1987	Field notes	Birds--Identification Ornithology Rare birds	1987-10-05	1987-10-06	Rare birds documentation form	Rare bird documentation form for two Greater Scaups at Big Creek State park in Polk County, IA on October 5, 1987.	Dinsmore, Stephen J.	Greater Scaup	Big Creek State Park	Big Creek State Park, Polk Co.	swimming on large lake	The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include Roger Sedlacek. \| Elimination of similar species: Lesser Scaup eliminated above. Both birds had smoothly rounded heads, not peaked like Lesser Scaup. Both birds seemed to have larger, heavier bills than Lesser Scaup. \| The original documentation form event lasted from 15:30:00/15:35:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Liscomb Sewage Lagoon, 1987	Field notes	Birds--Identification Ornithology Rare birds	1987-03-04	N/A	Rare birds documentation form	Rare bird documentation form fro eight Greater Scaups at Liscomb Sewage Lagoon in Marshall County, IA on March 4, 1987.	Proescholdt, Mark	Greater Scaup	Liscomb	Liscomb Sewage Lagoon - (Marshall Co.)	Open water area away from road with some brush around	The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Proescholdt. \| Elimination of similar species: Lesser Scaup have the bold white wing stripe on secondaries only, a more angular-shaped head, and a purple gloss for head color. \| The original documentation form event lasted from 16:15:00/16:30:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Coralville Reservoir, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-03-23	N/A	Rare birds documentation form	Rare bird documentation form for a Greater Scaup at Coralville Reservoir in Johnson County, IA on March 23, 1986.	Kent, Thomas H. (Thomas Hugh), 1934-	Greater Scaup	Coralville Lake	Dupont Bridge Rd., Coralville Res., Johnson Co., IA	backwater	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. \| Elimination of similar species: All features that I look for on male Greater Scaup were seen well over 15 minutes. \| The original documentation form event lasted from 09:45:00/10:00:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Marshalltown, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-03-19	N/A	Rare birds documentation form	Rare bird documentation form for two Greater Scaups at Marshalltown in Marshall County, IA on March 19, 1986.	Proescholdt, Mark	Greater Scaup	Marshalltown	Just on north edge of Marshalltown (Marshall Co.)	flooded corn fields from Iowa River overflow	The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. \| Elimination of similar species: Lesser Scaup shows bold white stripe on secondaries only. \| The original documentation form event lasted from 07:45:00/08:00:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Red Rock Reservoir, 1986	Field notes	Birds--Identification Ornithology Rare birds	1986-03-15	1986-03-19	Rare birds documentation form	Rare bird documentation form for a Greater Scaup at Red Rock Reservoir in Marion County, IA on March 15, 1986.	Proescholdt, Mark	Greater Scaup	Lake Red Rock	Red Rock Reservoir area - (Marion Co.)	A small farm pond on the south side of Red Rock	The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Phyllis J. Harris and Beth Proescholdt. \| Elimination of similar species: Lesser Scaup shows bold white stripe on secondaries only. \| The original documentation form event lasted from 14:50:00/14:55:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Hickory Grove Lake in 1985	Field notes	Birds--Identification Ornithology Rare birds	1985-11-20	1985-11-27	Manuscript, graphic, and printed material	Rare bird documentation form for a Greater Scaup at Hickory Grove Lake in Story County, IA on November 20, 23, and 27, 1985.	Martsching, Paul	Greater Scaup	Hickory Grove Lake				Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Lakin Slough, 1985	Field notes	Birds--Identification Ornithology Rare birds	1985-04-16	1985-04-22	Rare birds documentation form	Rare bird documentation form for two Greater Scaups at Lakin Slough in Guthrie County, IA on April 16, 1985.	Myers, Robert K.	Greater Scaup	Lakin Slough State Game Management Area	Lakin Slough (Guthrie Co.)	Cattail marsh - open water in center	The documentation form by Bob Myers is the only one submitted and forms the basis of this record. \| Elimination of similar species: The round crowned greenish head on male and whitish earpatch on female eliminated the lesser scaup. \| The original documentation form event lasted from 18:30:00/18:40:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Little Clear Lake in 1985	Field notes	Birds--Identification Ornithology Rare birds	1985-04-06	1985-04-07	Manuscript, graphic, and printed material	Rare bird documentation form for ten to fifteen Greater Scaups at Little Clear Lake in Pocahontas County, IA on April 6, 1985.	Carlson, Judith	Greater Scaup	Little Clear Lake Park				Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Little Clear Lake in 1985	Field notes	Birds--Identification Ornithology Rare birds	1985-04-07	N/A	Manuscript, graphic, and printed material	Rare bird documentation form for twenty-five to thirty Greater Scaups at Little Clear Lake in Pocahontas County, IA on April 7, 1985.	Jardine, Wallace E.	Greater Scaup	Little Clear Lake Park				Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Cedar Lake, 1982	Field notes	Birds--Identification Ornithology Rare birds	1982-04-12	1982-04-13	Rare birds documentation form	Rare bird documentation form for four Greater Scaups at Cedar Lake at Nashua, in Chickasaw County, IA on April 12, 1982.	Schaufenbuel, Joseph P.	Greater Scaup	Cedar Lake	Cedar Lake at Nashua, Chickasaw County, Iowa	Man-made 700 acre lake, with average depth of four ft.	The documentation form by Joe Schaufenbuel is the only one submitted and forms the basis of this record. Other observers include Lynn Barth. \| Elimination of similar species: Directly compared with numerous Lesser Scaups. The Lesser Scaups appeared smaller, peaked-headed, and duller on sides than the Greaters. Both of the females had a light colored area behind the eye that none of the female Lesser Scaup possessed. When the male Greater stretched the extensive amount of white in wings was strongly evident more so than the Lesser Scaups wing stripe. \| The original documentation form event lasted from 15:45:00/16:15:00.	Iowa Ornithologists' Union \| MS 166	33	10
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
Rare bird documentation form for Greater Scaup near Montrose, 1984	Field notes	Birds--Identification Ornithology Rare birds	1984-11-10	N/A	Rare birds documentation form	Rare bird documentation form for seven Greater Scaups near Montrose in Lee County, IA on November 10, 1984.	Moore, Francis L.	Greater Scaup	Montrose	Open pool on Mississippi River just south of Montrose, Lee Co., IA	Open water on Mississippi River	The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. Other observers include Bob Cecil. \| Elimination of similar species: Lesser Scaup does not have this flat headed look as this birdhad, but a pointed head look. Lesser Scaup female does not have a whitish area behind its eye like one of these birds had. The bill was not banded as a Ring-necked Duck female would have been. \| The original documentation form event lasted from 08:20:00/08:28:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Goose Lake, 1984	Field notes	Birds--Identification Ornithology Rare birds	1984-05-10	N/A	Rare birds documentation form	Rare bird documentation form for three Greater Scaups at Goose Lake in Clinton County, IA on May 10, 1984.	Petersen, Peter C.	Greater Scaup	Goose Lake	Goose Lake	marshy lake - N. side of Goose Lake, seen from dike.	The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Other observers include Larry Linder. \| Elimination of similar species: Lesser Scaup - eliminated by head shape, heavy nail on end of bill, whitish marking on head of female + wing stripe extending nearly to end of wing. \| The original documentation form event lasted from 09:30:00/09:50:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Volga River Recreation Area, 1983	Field notes	Birds--Identification Ornithology Rare birds	1983-11-25	N/A	Rare birds documentation form	Rare bird documentation form for three Greater Scaups at Volga River Recreation Area in Fayette County, IA on November 25, 1983.	Moore, Francis L.	Greater Scaup	Volga River State Recreation Area	Volga River Recreation Area just N. of Dam near boat ramp, Fayette Co.	Open water	The documentation form by Francis L. Moore is the only one submitted and forms the basis of this record. \| Elimination of similar species: Lesser Scaup has a purple sheen to the head at close range under the viewing conditions present when these birds were seen. Lesser Scaup also has a more pointed look to the top of the head and does not show the white in the primaries in flight. \| The original documentation form event lasted from 15:35:00/15:45:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Lock and Dam 9, 1983	Field notes	Birds--Identification Ornithology Rare birds	1983-11-21	1983-11-26	Rare birds documentation form	Rare bird documentation form for four Greater Scaups at Lock and Dam 9 in Allamakee County, IA on November 21, 1983.	Myers, Robert K.	Greater Scaup	Lock and Dam 9	Just north of Lock + Dam #9 on Mississippi River north of Harper's Ferry, Iowa.	Upper Mississippi Wildlife Refuge	The documentation form by Robert K. Myers is the only one submitted and forms the basis of this record. \| Elimination of similar species: Large size (bigger than lesser) - about size of the ring-necked ducks. Rounded heads - not peaked as in lessers. In good sunlight (for a change) showed green gloss on head (not purple). \| The original documentation form event lasted from 10:30:00/10:35:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup south of Montrose, 1983	Field notes	Birds--Identification Ornithology Rare birds	1983-11-20	N/A	Rare birds documentation form	Rare bird documentation form for two Greater Scaups south of Montrose in Lee County, IA on November 20, 1983.	Staudt, Thomas J.	Greater Scaup	Montrose	on the Mississippi River at the Linger Longer Rest area south of Montrose	open water large inlet	The documentation form by Thomas J. Staudt is the only one submitted and forms the basis of this record. Other observers include Carl Bendorf and Tom Kent. \| Elimination of similar species: Noticeable larger than Lesser Scaup male and female. Lesser had rougher head lines - peaked and an abrupt cutoff at back of head. Greater's lines were smooth from base of bill, over crown, on over through nape. \| The original documentation form event occurred around 10:30:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Montrose, 1983	Field notes	Birds--Identification Ornithology Rare birds	1983-11-20	N/A	Rare birds documentation form	Rare bird documentation form for three Greater Scaups at Montrose in Lee County, IA on November 20, 1983.	Kent, Thomas H. (Thomas Hugh), 1934-	Greater Scaup	Montrose	Montrose, Lee Co. - Keokuk pool	Mississippi pool	The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Carl Bendorf and Tom Staudt. \| Elimination of similar species: Head with large bill and little angle between bill + forehead. Back of head round. Head shape quite different from lessers seen at times in same field. Bird definitely large + head larger that all lessers.. \| The original documentation form event lasted from 09:50:00/10:20:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Polk City, 1983	Field notes	Birds--Identification Ornithology Rare birds	1983-04-27	1983-04-28	Rare birds documentation form	Rare bird documentation form for six Greater Scaups at Polk City in Polk County, IA on April 27, 1983.	Schaufenbuel, Joseph P.	Greater Scaup	Polk City	3 mi East of Polk City, Polk Co., Iowa	Flooded corn field - almost 40 acres of water-near Large Reservoir	The documentation form by Joe Schaufenbuel is the only one submitted and forms the basis of this record. \| Elimination of similar species: Scaup ducks compared directly with Lesser Scaups. When directly compared the three were larger, whiter on back and side, and rounder-headed than the Lesser Scaup. \| The original documentation form event lasted from 09:15:00/09:30:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Colo Ponds, 1983	Field notes	Birds--Identification Ornithology Rare birds	1983-04-18	1983-05-18	Rare birds documentation form	Rare bird documentation form for a Greater Scaup at Colo Ponds in Story County, IA on April 18, 1983.	LaGrange, Ted	Greater Scaup	Colo Bogs Wildlife Management Area	2 miles east of Colo (Colo ponds) Story County	flooded fields	The documentation form by Ted LaGrange is the only one submitted and forms the basis of this record. The form was typed by James Dinsmore. \| Elimination of similar species: Observed the bird feeding with about 30 Lesser Scaup. Obtained a good size compariosn [sic] between it and the Lesser Scaup, especially for the head and bill. \| The original documentation form event occurred around 12:00:00.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at DeSoto National Wildlife Refuge, 1983	Field notes	Birds--Identification Ornithology Rare birds	1983-02-24	N/A	Rare birds documentation form	Rare bird documentation form for eleven Greater Scaups at DeSoto National Wildlife Refuge in Harrison County, IA on February 24, 1983.	Bray, Tanya	Greater Scaup	DeSoto National Wildlife Refuge	DeSoto Bend National Wildlife Refuge		The documentation form by Tanya Bray is the only one submitted and forms the basis of this record. Other observers include Sandy Kovanda and Babs Padelford. \| Elimination of similar species: These bird were determined to be Greater rather than Lesser Scaup on the following characteristics: Rounded heads with large, very broad bills. Pure white sides and pale gray backs. Almost size of Mallards.	Iowa Ornithologists' Union \| MS 166	33	10
Rare bird documentation form for Greater Scaup at Port Neal, 1982	Field notes	Birds--Identification Ornithology Rare birds	1982-06-06	N/A	Rare birds documentation form	Rare bird documentation form for two Greater Scaups at Port Neal in Woodbury County, IA on June 6, 1982.	Schaufenbuel, Joseph P.	Greater Scaup	New Lake	Port Neal	Oxbow Lake with fringe cattail	The documentation form by Joe Schaufenbuel is the only one submitted and forms the basis of this record. \| Elimination of similar species: Lesser Scaup: Bird lacked peaked head was clear white on sides head rounded and wide. Speculum extended to wing tip. \| The original documentation form event lasted from 14:45:00/15:00:00.	Iowa Ornithologists' Union \| MS 166	33	10