@misc{indiciae9fe0d2cc8460,
  title = {The display flight of The North American Ruddy Duck},
  author = {M. R. Miller and R.M. McLandress and B.J. Gray},
  year = {1977},
  url = {https://pubs.usgs.gov/publication/1007800},
  note = {Source identifier: 1007800}
}