TY  - RPRT
TI  - Sex-specific differences in winter distribution patterns of canvasbacks
AU  - J.D. Nichols
AU  - G.M. Haramis
PY  - 1980
DO  - 10.2307/1367565
UR  - https://pubs.usgs.gov/publication/5221577
ID  - 5221577
ER  -