@misc{indiciae04da26be1789,
  title = {Size and mass of grit in gizzards of sandhill cranes, tundra swans, and mute swans},
  author = {J. Christian Franson and Scott P. Hansen and Adam E. Duerr and Stephen DeStefano},
  year = {2001},
  doi = {10.2307/1522036},
  url = {https://pubs.usgs.gov/publication/70006595},
  note = {Source identifier: 70006595}
}