TY  - RPRT
TI  - Determinants of mallard and gadwall nesting on constructed islands in North Dakota
AU  - Terry L. Shaffer
AU  - Ann L. Dahl
AU  - Ronald E. Reynolds
AU  - Kathy L. Baer
AU  - Michael A. Johnson
AU  - Glen A. Sargeant
PY  - 2006
DO  - 10.2193/0022-541x(2006)70[129:domagn]2.0.co;2
UR  - https://pubs.usgs.gov/publication/1016619
ID  - 1016619
ER  -