@misc{indiciae4cff87a21e89,
  title = {Seasonal abundance and behavior of black brant (Branta bernicla nigricans) on Humbolt Bay, California},
  author = {W.G. Henry and P. F. Springer},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/1001533},
  note = {Source identifier: 1001533}
}