UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w91z41w58
Type Text
Description Records Committee review for a Thayer's Gull at Lock 15 in Davenport in Scott County, IA on December 24, 1986. Includes a record review document with votes and a documentation form submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1986-12-24 - 1993-09-07
People / Organizations
Time 10:10 AM
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Data License http://creativecommons.org/publicdomain/zero/1.0
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 Lock and Dam 15
Map
Verbatim Locality Lock 15, Davenport
Location Remarks The documentation forms do not include georeferences
Habitat General: Mississippi River Specific: just below roller dam
Extent 2 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 Tim Dwyer and Jerry White. | Elimination of similar species: Herring Gull - wing tips not black on this bird, + its eye was dark. Iceland (Humelius) - wing tips not as pale grey, legs not pale pink. | The original documentation form event lasted from 10:10:00/10:15:00 on December 24, 1986 and 14:40:00/14:42:00 on December 25, 1986.
Occurrence Status present
Field Number 1986-29
Event Remarks Viewing Conditions: Distance: 100-200' (est.) Optical equipment: 10x40 binocs Light: fairly bright oc.
Supporting Documentation National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society.
Date Digital 30 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed