UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w95d8ng9h
Type Text
Description Records Committee review of a Eurasian Wigeon 4 miles south of Ventura in Cerro Gordo County, IA on March 18, 1992. Includes a record review document with votes, an Iowa Bird Life, and a documentation form submitted to the committee.
Related Genres Administrative records Clippings (information artifacts) Field notes
Sort Date 1992-03-18 - 1994-10-18
People / Organizations
Time 11:00 AM
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Collection Iowa Ornithologists' Union | MS 166
Box 8
Folder 14
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Pinkston, Randall, 1956-
Contributors Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Eurasian Wigeon
Locations Ventura
Map
Verbatim Locality County Roads B43 at S14, approx. 4 miles south of Ventura, Cerro Gordo Co., Iowa
Location Remarks The documentation forms do not include georeferences
Habitat
Extent 5 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation form by Randall Pinkston is the earliest and the one that forms the basis of this record. | Elimination of similar species: Obvious differences from American Wigeon include the American's dark (green) face mask, white forehead and crown ("baldpate"), as well as those other differences discussed above. Female American has finely mottled grayish head and brownish sides, lacks striking patterns on wings and hindparts. Redhead (Aythya americana) has 'pochard' gestalt with darker brick-red vs. cinnamon-buff head, head more rounded in profile, tricolored bill broad and stout. Also has relatively plain wing with gray coverts and pale gray remiges. Canvasback (Aythya valisineria) of either sex safely separable on the basis of head and bill in profile. Again, male's head is dark brick-red, back and sides whitish, lacks bold wing pattern. Female mergansers easily separable on the basis of bill alone. | The original documentation form event occurred around 11:00:00.
Occurrence Status present
Field Number 1992-01
Event Remarks Observed for almost a minute initially swimming directly away from me on a drainage canal at 50-60 meters. The 3 wigeons then took off and made a narrow circle to the north and east, returning to the canal about 60-80 meters away. They were once again viewed for 1-2 minutes until they swam out of view around a corner in the canal to the east. Total viewing time about 3 minutes with Zeiss 10x40 and Selsi Zoom 10x-30x60 binoculars. Partly cloudy, sunny, temp. 30sF, winds N 16 mph. Scattered nearby were several Mallards (Anas platyrhynchos), N. Shovelers (Anas clypeata) and Lesser Scaup (Aythya affinis).
Supporting Documentation
Date Digital 11 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed