UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w9p843z50
Type Text
Description Records Committee review for a Lesser Black-backed Gull at Red Rock Dam in Marion County, IA on November 27, 1996. Includes a record review document with votes and a documentation form submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1996-11-27 - 2000-11-22
People / Organizations
Time 3:22 PM
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Data License http://creativecommons.org/publicdomain/zero/1.0
Collection Iowa Ornithologists' Union | MS 166
Box 11
Folder 5
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Dinsmore, Stephen J.
Contributors Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Lesser Black-backed Gull
Locations Red Rock Dam
Map
Verbatim Locality below Red Rock dam, Marion Co., IA
Location Remarks The documentation forms do not include georeferences
Habitat dam tailwaters
Extent 3 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The most similar-appearing species is first-basic Herring Gull. The combination of slightly smaller size, longer wings, whiter rump, more speckled mantle, contrast between the darker mantle and lighter head, and darker upperwings lacking a pale "window" eliminated Herring Gull in first-basic plumage. | The original documentation form event lasted from 15:22:00/15:40:00.
Occurrence Status present
Field Number 1996-61
Event Remarks Viewing Conditions: Viewing conditions were very good with overcast skies. Estimated viewing distance was 75m. I used 10x42 binoculars and a 20-60x spotting scope.
Supporting Documentation National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. | Grant, PJ. Gulls: a guide to identification. Cambridge, MA: Academic Press.
Date Digital 01 Jun 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed