UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w90p0ws9m
Type Text
Description Rare bird documentation form for a Herring Gull at Red Rock Reservoir in Marion County, IA on January 4, 1991.
Related Genres Field notes
Sort Date 1991-01-04 - 1991-01-23
People / Organizations
Time 8:10 AM
Rights This Item is protected by copyright and/or related rights. However, for this Item, either (a) no rights-holder(s) have been identified or (b) one or more rights-holder(s) have been identified but none have been located. If you have any information that can contribute to identifying or locating the rights-holder(s) please notify the Iowa State University Library Digital Initiatives Program (digital@iastate.edu). (Rightsstatements.org InC-RUU 1.0). The original object is available at the Iowa State University Library Special Collections and University Archives (archives@iastate.edu).
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 34
Folder 34
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Kent, Thomas H. (Thomas Hugh), 1934-
Contributors Barksdale, Tim Fuller, James L
Topics Birds--Identification Ornithology Rare birds
Birds Herring Gull
Locations Lake Red Rock
Map
Verbatim Locality Red Rock Reservoir, Marion County, Iowa
Location Remarks The documentation forms do not include georeferences
Habitat Des Moines River below dam, water mostly open with ice on edges
Extent 1 page
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Other observers include Jim Fuller and Tim Barksdale. | Elimination of similar species: The color of the back and obvious window in the inner primaries, as well as the rest of the feather tracts, all fit 2nd winter Herring Gull and seem to exclude Lesser Black-backed Gull. The soft parts were somewhat atypical, but I was not bothered much by this because I have seen much variation in Herring Gulls. | The original documentation form event lasted from 08:10:00/08:25:00 and 12:45:00/13:00:00 (approximate)
Occurrence Status present
Field Number
Event Remarks Viewing Conditions: 30 to 100 yards, partly overcast, 20x binocular, and zoom Kowa scope.
Supporting Documentation National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society. | Grant, PJ. Gulls: a guide to identification. Cambridge, MA: Academic Press.
Date Digital 15 Dec 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed