UID
Digital Object Type Rare birds documentation form
Content DM Link https://n2t.net/ark:/87292/w9kp7tt76
Type Text
Description Records Committee review of a Western Sandpiper at Babcock Access at Coralville Reservoir in Johnson County, IA on October 13, 1990. Includes a record review document with votes and a documentation form submitted to the committee.
Related Genres Administrative records Field notes
Sort Date 1990-10-13 - 1993-07-17
People / Organizations
Time 10:15 AM
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Collection Iowa Ornithologists' Union | MS 166
Box 10
Folder 3
Contributing Institution Iowa State University Library Special Collections and University Archives
Creator / Author Kent, Thomas H. (Thomas Hugh), 1934-
Contributors Iowa Ornithologists' Union Records Committee
Topics Bird watching Ornithology Ornithology--Societies, etc
Birds Western Sandpiper
Locations Babcock Access
Map
Verbatim Locality Babcock Access, Coralville Res., Johnson Co. Iowa.
Location Remarks The documentation forms do not include georeferences
Habitat mud flats with shallow pools
Extent 2 pages
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 Dick Tetrault. | Elimination of similar species: The size and shape in comparison with Baird's Sandpiper establish this bird as a peep. The black legs, gray color, and lack of bib exclude Least Sandpiper (several of which were seen earlier). The distinction from Semipalmated Sandpiper is based on the bill and apparent molt to basic plumage. Five minutes earlier I had seen two Semipalmated Sandpipers running on the other side of the area; they had short straight bills and had all feathers of the upper parts edged with buff (juvenile plumage). I had seen a number of Semipalmated Sandpipers with longer and slightly drooped bills this fall, but none approached the length, thinness, and droop seen on the current bird. According to Kenn Kaufman's Advanced Birding, Semipalmated Sandpipers wear their juvenile plumage until they reach wintering grounds, and juvenile Western Sandpipers gradually molt from juvenile to basic plumage from August to October with some retaining rusty scapulars. I assume, based on date, that this bird was probably a first-year bird, and that it had either completely molted to basic plumage or had some rusty scapulars that I did not see. I did not consider any of the Eurasian stints, which would be exceeding unlikely and have bills more like a semipalmated or have yellow legs. | The original documentation form event lasted from 10:15:00/10:20:00.
Occurrence Status present
Field Number 1990-28
Event Remarks Viewing Conditions: Sun was at about 120 degrees (to my right with slight back lighting; the bird was close (about 20 yards) and viewed with 20x scope.
Supporting Documentation Kaufmann K. Kaufman field guide to advanced birding. Peterson Field Guide Series. New York: Houghton Mifflin Harcourt. | National Geographic Society. National geographic field guide to the birds of North America. Washington D.C.: National Geographic Society.
Date Digital 23 May 2017
File Type image/jpeg
Hardware / Software Epson - sheet feed