UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w98c9r53s
Type Text
Description Records Committee review for an Arctic Loon at Saylorville Reservoir in Polk County, IA on October 28, 1989. Includes a record review document with votes, and a documentation form in the form of a letter from Ken Lowder to Thomas H. Kent with Geri Langham receiving a copy as well on September 16, 1994 submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1989-10-28 - 1996-04-25
People / Organizations
Time
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Data License http://creativecommons.org/publicdomain/zero/1.0
Collection Iowa Ornithologists' Union | MS 166
Box 7
Folder 6
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Lowder, Ken
Contributors Kent, Thomas H. (Thomas Hugh), 1934- Langham, Geri Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Arctic Loon
Locations Saylorville Dam
Map
Verbatim Locality I saw the bird at the dam at Saylorville Lake
Location Remarks The documentation forms do not include georeferences
Habitat
Extent 4 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation letter by Ken Lowder is the only one submitted and forms the basis of this record. Other observers include John Daniel. | Elimination of similar species: It acted differently from the Common Loons. When it dove, it "reared back" its head, as though it were "winding up" for the dive. The Common Loons did not do this. In the Walsh article, this behavior is discussed. On page 26 of his article, Walsh states that "both Pacific and Artic Loons have similar diving motions." I do not believe our bird was a Pacific Loon. I base this judgement on overall body size, bill size, and the distribution of white coloration in the head/neck, waterline, and flank areas. Our bird was essentially similar size-wise to the accompanying Common Loons. The bill was also similar to Common Loon. It was not upturned and this as I would have expected with Red-throated Loon.
Occurrence Status present
Field Number 1994-AB
Event Remarks The day was warm and sunny. We were right on the dam at a range to the bird of about 50-60 yards in the mid-afternoon, so the sun was at our back allowing for very good observation. We both had spotting scopes. I use a Kowa TSN-4 and John has a Swift Spacemaster.
Supporting Documentation Walsh T. Birding. XX(1): 12-28. | Schulenberg. Birding. 1989; XXI(3):154-158.
Date Digital 04 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed