@misc{indiciae509ae6c3bd27,
  title = {Does Mallard clutch size vary with landscape composition?},
  author = {I.J. Ball and M. J. Artmann and S. T. Hoekman},
  year = {2002},
  doi = {10.1676/0043-5643(2002)114[0404:dmcsvw]2.0.co;2},
  url = {https://pubs.usgs.gov/publication/70024373},
  note = {Source identifier: 70024373}
}