UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w9ww77294
Type Text
Description Records Committee review for two Thayer's Gull at Lock and Dam 15 near Davenport in Scott County, IA on December 15, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1991-12-15 - 1993-07-17
People / Organizations
Time 3:15 PM
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Data Access Rights http://vertnet.org/resources/norms.html
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 Blevins, Brian L.
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 + Dam 15 on Mississippi River
Location Remarks The documentation forms do not include georeferences
Habitat Mississippi River Flyway just below the Dam
Extent 2 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 2
Occurrence Remarks The documentation form by Brian Blevins is the only one submitted and forms the basis of this record. Other observers include Corey Blevins, Lewis Blevins, and Peter C. Petersen. | Elimination of similar species: Herring Gull -> Immature - eliminated by the light brown color continuous all the way throughout the wingtips, thus there was not a darkening towards the wing tips. Adult - eliminated by the light mantle getting lighter towards the wingtips, with just a few grey spots on the primaries. | The original documentation form event lasted from 15:15:00/15:45:00.
Occurrence Status present
Field Number 1991-44
Event Remarks Viewing Conditions: Bright Sunny, Closest (15 feet), average 35 to 50 yds. 7x35 Binocs 10x50 binocs 15 to 45x Scope 8x40 Binocs
Supporting Documentation
Date Digital 30 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed