@misc{indiciae36c6fafc8c01,
  title = {Redhead duck behavior on lower Laguna Madre and adjacent ponds of southern Texas},
  author = {C. A. Mitchell and T. W. Custer and P.J. Zwank},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/5222917},
  note = {Source identifier: 5222917}
}