UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w9w669b98
Type Text
Description Records Committee review for a Black-legged Kittiwake at the dredge ponds near Lake Manawa in Pottawattamie County, IA on April 23, 1983. Includes a record review document with votes, correspondence relevant to bird sighting and review, a summary of the review, and a documentation submitted to the committee.
Related Genres Administrative records Correspondence Field notes
Sort Date 1983-04-23 - 1993-09-01
People / Organizations
Time
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Collection Iowa Ornithologists' Union | MS 166
Box 11
Folder 10
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Otto, Rebecca Otto, William
Contributors Kent, Thomas H. (Thomas Hugh), 1934- Bray, Tanya Iowa Ornithologists' Union Records Committee Peterjohn, Bruce G.
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Black-legged Kittiwake
Locations Lake Manawa State Park
Map
Verbatim Locality [...] at the dredge ponds near Lake Manawa, Council Bluffs, Iowa.
Location Remarks The documentation forms do not include georeferences
Habitat
Extent 9 pages
Language(s) eng
Bibliographic Citation
Information Withheld
Individual Count 1
Occurrence Remarks The documentation by William and Rebecca Otto is the only one submitted and forms the basis of this record. | Elimination of similar species: [...] We eliminated the possibility of the gull being an immature Bonaparte's gull by the following criterion: 1. Leg color. The gulls legs and feet were entirely black. Bonaparte's gull have reddish legs. This was apparent at great distance on the immature Bonaparte's gulls present. 2. Primary feathers. The gull had black outer primaries and gray inner primaries. Immature Bonaparte's having some obvious white inner primaries.) 3. Behavior. Although this may seem rather unscientific, the gull not joining the groups of feeding or loafing gulls present seems significant to me. | The original documentation form event lasted around 30 minutes.
Occurrence Status present
Field Number 1983-07
Event Remarks Viewing Conditions: [...] The gull was first observed hovering 30' overhead allowing us an excellent view of its black legs and feet. [...] We observed the gull with 7x35 mm binoculars for 30 minutes, most of which the gull spent flying. It did land alone on the west edge of the NW pond and remained on the shore for 5 minutes.
Supporting Documentation
Date Digital 01 Jun 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed