@misc{indiciae84d70b08c7d5,
  title = {Distribution and numbers of American black ducks along the Maine coast during the severe winter of 1980-1981},
  author = {J. R. Longcore and J.P. Gibbs},
  year = {1988},
  url = {https://pubs.usgs.gov/publication/5210079},
  note = {Source identifier: 5210079}
}