UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w9qn5zc75
Type Text
Description Records Committee review for a Great Cormorant at Rice Lake in Worth County, IA on September 8, 1996. Includes a record review document with votes and two documentation forms submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1996-09-08 - 2000-11-22
People / Organizations
Time 11:00 AM
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Data License http://creativecommons.org/publicdomain/zero/1.0
Collection Iowa Ornithologists' Union | MS 166
Box 7
Folder 13
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Bangma, Jim
Contributors Johnson, Ann Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Great Cormorant
Locations Rice Lake
Map
Verbatim Locality Rice Lake
Location Remarks The documentation forms do not include georeferences
Habitat Lake
Extent 5 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Jim Bangma is the earliest and the one that forms the basis of this record. Another documentation form by Ann Johnson was submitted later. | Elimination of similar species: Double-crested is smaller, with a much thinner neck. There is a noticeable transition from the thin neck to the larger head. In this bird, there was no noticeable widening from the neck to the head. Additionally, Double-crested has a proportionally much smaller and weaker bill. Double-crested's forehead slopes more evenly into the bill. While these differences may be difficult to see in single birds without comparative experience, in direct comparison they are significant. Additionally, the orange facial skin combines with the gular pouch to accentuate the overall orange color of the face. Other extralimital black cormorants can be ruled out on size alone, additionally, most have thinner necks and smaller bills than even Double-crested. | The original documentation form event lasted from 11:00:00/11:02:00.
Occurrence Status present
Field Number 1996-44
Event Remarks Viewing conditions: Light overcast. 100 yards. 7x42 Zeiss binoculars
Supporting Documentation National Geographic. Field guide to the birds of North America. 2nd Edition. Washington, DC: National Geographic Society; 1987. | Simmons KEL, Ferguson-Lees IJ, Gillmor R, Hollom PAD, Hudson R, Nicholson EM, Ogilvie MA, Olney PJS, Voous KH, Wattel J. Handbook of the birds of Europe the Middle East and North Africa. Vol. 3, waders to gulls. New York: Oxford University Press; 1983. | Farrand J. The Audubon society master guide to birding, vol. 1, loons to sandpipers. New York: Alfred A. Knopf, Inc; 1983. | Harrison P. Seabirds, an identification guide. Boston, MA: Houghton Mifflin Company; 1985. | Harrison P. A field guide to seabirds of the world. Lexington (MA): The Stephen Greene Press; 1987. | Heinzel H, Fitter RS, Parslow J. The Birds of Britain and Europe with North Africa and the Middle East. London, UK: Williams Collins Sons & Co, Ltd.; 1979 | Jonsson L. Birds of Europe with North Africa and the Middle East. Princeton, NJ: Princeton University Press; 1993. | Peterson RT, Mountfort G, Hollom PAD. A Field guide to birds of Britain and Europe, 5th edition. Boston, MA: Houghton Mifflin Company; 1993. | Peterson RT. A field guide to Western Birds. Boston, MA: Houghton Mifflin Company; 1961.
Date Digital 05 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed