@misc{indiciae4bcb44ea9d26,
  title = {Sex-specific differences in winter distribution patterns of canvasbacks},
  author = {J.D. Nichols and G.M. Haramis},
  year = {1980},
  doi = {10.2307/1367565},
  url = {https://pubs.usgs.gov/publication/5221577},
  note = {Source identifier: 5221577}
}