TY  - RPRT
TI  - Influence of nutrients on feed intake and condition of captive canvasbacks in winter
AU  - Matthew C. Perry
AU  - Wayne J. Kuenzel
AU  - Byron K. Williams
AU  - John A. Serafin
PY  - 1986
DO  - 10.2307/3801099
UR  - https://pubs.usgs.gov/publication/5222099
ID  - 5222099
ER  -