TY  - RPRT
TI  - Brood sizes of sympatric American black ducks and mallards in Maine
AU  - J. R. Longcore
AU  - D.A. Clugston
AU  - D.G. McAuley
PY  - 1998
DO  - 10.2307/3802272
UR  - https://pubs.usgs.gov/publication/5223331
ID  - 5223331
ER  -