UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w9kp7tv08
Type Text
Description Records Committee review for a Great Black-backed Gull at Lock 19 in Keokuk in Lee County, IA on February 7, 1991. Includes a record review document with votes, an article in Iowa Bird Life, comparison of different gull sightings, and two documentation forms submitted to the committee.
Related Genres Administrative records Clippings (information artifacts) Field notes
Sort Date 1991-02-07 - 1993-07-17
People / Organizations
Time 1:10 PM
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Data Access Rights http://vertnet.org/resources/norms.html
Data License http://creativecommons.org/publicdomain/zero/1.0
Collection Iowa Ornithologists' Union | MS 166
Box 11
Folder 8
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Dinsmore, Stephen J.
Contributors Johnson, Ann Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Great Black-backed Gull
Locations Lock Number 19
Map
Verbatim Locality Lock 19, Keokuk, Lee Co.
Location Remarks The documentation forms do not include georeferences
Habitat
Extent 10 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Steve Dinsmore forms the basis of this record. Another documentation form by Ann Johnson was submitted. Another observer was Beth Brown. | Elimination of similar species: The black mantle really eliminates most other gulls. Western Gull, a remote possibility, is smaller and has a slightly paler mantle. | The original documentation form event lasted from 13:10:00/15:40:00 on February 7, 1991 and 13:32:00/14:20:00 on February 8, 1991.
Occurrence Status present
Field Number 1991-18
Event Remarks Viewing Conditions: Viewing conditions were very good with the sun mostly behind me. Estimated viewing distance was 200-300 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. | 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