TY  - RPRT
TI  - Nest and brood attentiveness in female black ducks
AU  - J.K. Ringelman
AU  - J. R. Longcore
AU  - R.B. Owen
PY  - 1982
DO  - 10.2307/1367831
UR  - https://pubs.usgs.gov/publication/5221744
ID  - 5221744
ER  -