@misc{indiciae9681cde933f6,
  title = {Premigrational movements and behavior of young mallards and wood ducks in north-central Minnesota},
  author = {R.E. Kirby and L.M. Cowardin and J.R. Tester},
  year = {1989},
  url = {https://pubs.usgs.gov/publication/81367},
  note = {Source identifier: 81367}
}