UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w94j0b09j
Type Text
Description Records Committee review for a Lesser Black-backed Gull at Jester Park at Saylorville Reservoir in Polk County, IA on December 4, 1988. Includes a record review document with votes and a documentation form submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1988-12-04 - 1993-08-04
People / Organizations
Time 2:50 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 Jester Park
Map
Verbatim Locality Saylorville Reservoir, Polk Co.-near Jester Park
Location Remarks The documentation forms do not include georeferences
Habitat resting on mud bar with thousands of other gulls
Extent 2 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The size(larger than Ring-billed Gull, smaller than Herring Gull) eliminates all Gulls except Herring, California, and Lesser Black-backed gulls. Dark mantle color eliminates Herring Gull. The dark gray mantle was too dark for a California Gull, and the legs were a brighter yellow than the dull yellow leg color of a California. | The original documentation form event lasted from 14:50:00/15:15:00.
Occurrence Status present
Field Number 1988-41
Event Remarks Viewing Conditions: Viewing conditions were excellent with the sky mostly cloudy. Estimated viewing distance was 300 yards. I used a Buschnell 20-45x spotting scope.
Supporting Documentation National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society.
Date Digital 31 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed