@misc{indiciaeebf79c37bced,
  title = {Conservation status of the world’s swan populations, Cygnus sp. and Coscoroba sp.: a review of current trends and gaps in knowledge},
  author = {Eileen Rees and Lei Cao and P. Clausen and J. M. Coleman and J. Cornely and O. Einarsson and Craig R. Ely and R. Kingsford and Ming Ma and C. E. Mitchell and S. Nagy and T. Shimada and Jeffrey Snyder and D. Solovyeva and W. Tijsen and Y. Vilna and R. Wlodarczyk and K. Brides},
  year = {2019},
  url = {https://pubs.usgs.gov/publication/70218758},
  note = {Source identifier: 70218758}
}