@misc{indiciaef39824ce21ed,
  title = {Weights of wild mallard Anas platyrhynchos, gadwall A. strepera, and blue-winged teal A. discors during the breeding season},
  author = {John T. Lokemoen and Douglas H. Johnson and David E. Sharp},
  year = {1990},
  url = {https://pubs.usgs.gov/publication/1001258},
  note = {Source identifier: 1001258}
}