@misc{indiciae03f83dc30861,
  title = {A remote controlled system for capturing nesting waterfowl},
  author = {Charles W. Shaiffer and Gary L. Krapu},
  year = {1978},
  doi = {10.2307/3800840},
  url = {https://pubs.usgs.gov/publication/1001266},
  note = {Source identifier: 1001266}
}