UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w9kd1qn85
Type Text
Description Records Committee review for a Black-headed Gull at Red Rock Reservoir in Marion County, IA on November 3, 1996. Includes a record review document with votes and a documentation form submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1996-11-03 - 2000-11-22
People / Organizations
Time 12:30 PM
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Data License http://creativecommons.org/publicdomain/zero/1.0
Collection Iowa Ornithologists' Union | MS 166
Box 10
Folder 21
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Johnson, Ann
Contributors Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Black-headed Gull
Locations Lake Red Rock
Map
Verbatim Locality Red Rock Reservoir, Marion Co., IA
Location Remarks The documentation forms do not include georeferences
Habitat Large lake
Extent 2 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Ann Johnson is the only one submitted and forms the basis of this record. | Elimination of similar species: Only one other North American gull has a leading white edge to the upperwing- Bonaparte's. Size and jizz helped differentiate this bird from the Bonaparte's, but the dark underwing eliminated the smaller species. | The original documentation form event lasted from 12:30:00/12:33:00.
Occurrence Status present
Field Number 1996-57
Event Remarks Viewing Conditions: Sunny with the sun fairly high in the sky. Although I was looking towards the sun as I followed the bird out across the open water, I was above it on the road and not looking directly into poor light. The bird was initially about 100 feet in front of me and was observed through Zeiss 7X42 binoculars.
Supporting Documentation National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. | Harrison, P. Seabirds: an identification guide. New York: Houghton Mifflin Harcourt. | Grant, PJ. Gulls: a guide to identification. Cambridge, MA: Academic Press.
Date Digital 26 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed/flatbed