TY  - RPRT
TI  - Seasonal energetics and behavior of captive canvasbacks (Aythia valisineria)
AU  - Matthew C. Perry
AU  - Wayne J. Kuenzel
PY  - 1983
DO  - 10.3382/ps.0621370
UR  - https://pubs.usgs.gov/publication/5223156
ID  - 5223156
ER  -