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An evaluation of regression methods to estimate nutritional condition of canvasbacks and other water birds

June 9, 2009

Regression equations that use mensural data to estimate body condition have been developed for several water birds. These equations often have been based on data that represent different sexes, age classes, or seasons, without being adequately tested for intergroup differences. We used proximate carcass analysis of 538 adult and juvenile canvasbacks (Aythya valisineria ) collected during fall migration, winter, and spring migrations in 1975-76 and 1982-85 to test regression methods for estimating body condition.

Citation Information

Publication Year 1992
Title An evaluation of regression methods to estimate nutritional condition of canvasbacks and other water birds
DOI
Authors D.W. Sparling, J.A. Barzen, J.R. Lovvorn, J.R. Serie
Publication Type Report
Publication Subtype Federal Government Series
Series Title Biological Report
Series Number 3
Index ID 5230219
Record Source USGS Publications Warehouse
USGS Organization Northern Prairie Wildlife Research Center