@misc{indiciae632890762777,
  title = {Determination of hatching date for eggs of black-crowned night-herons, snowy egrets and great egrets},
  author = {T. W. Custer and G.W. Pendleton and R.W. Roach},
  year = {1992},
  url = {https://pubs.usgs.gov/publication/1003202},
  note = {Source identifier: 1003202}
}