UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w9bv79w9d
Type Text
Description Records Committee review for a Red-throated Loon at Saylorville Reservoir in Polk County, IA on November 16, 1988. Includes a record review document and three documentation forms submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1988-11-16 - 1993-08-04
People / Organizations
Time 1:46 PM
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Collection Iowa Ornithologists' Union | MS 166
Box 7
Folder 5
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Dinsmore, Stephen J.
Contributors Armstrong, Eloise Armstrong, Eugene Proescholdt, Mark Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Red-throated Loon
Locations Jester Park
Map
Verbatim Locality Jester Park area of Saylorville Reservoir, Polk Co.
Location Remarks The documentation forms don't include georeferences.
Habitat swimming and diving on large reservoir
Extent 4 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Steve Dinsmore is the earliest and the one that forms the basis of this record. Other documentation forms by Eugene Armstrong, Eloise Armstrong, and Mark Proescholdt were submitted later. | Elimination of similar species: The body shape, posture, and black-and-white coloration identified the bird as loon. Although some Common Loons may be quite small. I think this bird was too small for even a very small Common Loon. Otherwise, the slender, upturned bill, the head posture, the contrast between the back and the neck, and the gray neck and white throat eliminated Pacific and Common Loons. | The original documentation form event lasted from 13:46:00/15:43:00.
Occurrence Status present
Field Number 1988-08
Event Remarks Viewing conditions were very good with the sun directly behind us. 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 04 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed