@misc{indiciaef1d9a9ce7286, title = {Sources of variation in waterfowl survival rates}, author = {D.G. Krementz and R. J. Barker and J.D. Nichols}, year = {1997}, doi = {10.2307/4089068}, url = {https://pubs.usgs.gov/publication/5223180}, note = {Source identifier: 5223180} }