UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w99z90d11
Type Text
Description Records Committee review for a Red-throated Loon at Saylorville Reservoir in Polk County, IA on December 1, 1986. Includes a record review document, a summary of the review of the committee, and a documentation form submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1986-12-01 - 1993-09-07
People / Organizations
Time 3:26 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 Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Red-throated Loon
Locations Saylorville Lake
Map
Verbatim Locality Saylorville Reservoir, Polk Co. (Cherry Glen Recreation Area)
Location Remarks The documentation forms don't include georeferences
Habitat swimming in open water off rock jetty
Extent 3 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. | Elimination of similar species: Common Loon eliminated by smaller size, head posture, shorter, upturned bill, speckling on back, more rounded forehead, and sharp contrast between throat and back of neck. Pacific Loon eliminated by bill shape, head posture, speckling on back, two-toned (not three-toned) neck pattern, lack of chinstrap (not definitive, but helpful), and crown color not including the eye (should include the eye on Pacific Loon). | The original documentation form event lasted from 15:26:00/15:50:00.
Occurrence Status present
Field Number 1986-18
Event Remarks Viewing conditions were good with the sun to the side and the sky mostly overcast. Estimated viewing distance was 150 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