Nesting success of Northern Pintails on the coastal Yukon-Kuskokwim Delta, Alaska

The Condor
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Abstract

We studied nesting chronology and success of Northern Pintails (Anas acuta) on the coastal Yukon-Kuskokwim Delta, Alaska during the summers of 1991-1993. We found a total of 795 nests during three annual searches of a 27.4 km2 area. Minimum nest density averaged 9.67 nests per km2. Nesting success varied among years and ranged from 43.12% in 1991 to 10.74% in 1993 (average 23.95%). Most nest loss was the result of predation and tidal flooding. Daily nest survival probability declined with nest initiation date in all three years and also varied with nest age in 1992. Clutch size averaged 7.63 ± 0.067 (SE) eggs per nest and was larger than reported for other populations of Northern Pintails. Clutch size declined during the 44-47 day nesting interval at a greater rate than reported for other populations of Northern Pintails. We conclude that sub-arctic and prairie nesting Northern Pintails have similar reproductive potentials.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Nesting success of Northern Pintails on the coastal Yukon-Kuskokwim Delta, Alaska
Series title The Condor
DOI 10.2307/1369508
Volume 98
Issue 1
Year Published 1996
Language English
Publisher Cooper Ornithological Society
Contributing office(s) Alaska Science Center, Alaska Science Center Biology WTEB, Coop Res Unit Atlanta
Description 7 p.
First page 54
Last page 60
Country United States
State Alaska
Other Geospatial Yukon-Kuskokwim Delta
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