UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w99g5gg97
Type Text
Description Records Committee review for a Thayer's Gull near Lindsay Park in Davenport in Scott County, IA on February 18, 1989. Includes a record review document with votes and a documentation form submitted to the committee for this sighting.
Related Genres Administrative records Field notes
Sort Date 1989-02-18 - 1993-08-05
People / Organizations
Time 9:50 AM
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Collection Iowa Ornithologists' Union | MS 166
Box 11
Folder 3
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Petersen, Peter C.
Contributors Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Thayer's Gull
Locations Lindsay Park
Map
Verbatim Locality Lindsay Park Boat Club harbor, east edge of Davenport Scott Co.
Location Remarks The documentation forms do not include georeferences
Habitat On ice shelf along Mississippi River, 40 yards from sea wa[...]
Extent 3 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record.Other observers include Walter Zuurdeeg and many unidentified observers. | Elimination of similar species: [...] Immature gull same size as nearby Herring Gulls. [...] Head smaller than Herrings, bill more slight, black, + not thickened at the tip, compared to Herrings. When wings spread - this was seen twice, the upper surface seemed fairly uniform with no dark tip pattern as in the Herrings. | The original documentation form event lasted from 09:50:00/09:55:00.
Occurrence Status present
Field Number 1989-09
Event Remarks Viewing Conditions: [...] Bird seen from about 100 yards with 10X40 binoculars + 20x scope. Sun at 90° angle to birds.
Supporting Documentation National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. | Farrand J. The Audubon society master guide to birding, vol. 2, gulls to dippers. New York: Alfred A. Knopf, Inc.
Date Digital 30 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed