@misc{indiciae2e16ad8cc5ce,
  title = {Social foraging and feeding environment of the black-crowned night heron in an industrialized estuary},
  author = {R. Michael Erwin and Jeff S. Hatfield and William A. Link},
  year = {1991},
  doi = {10.3727/015613890791749037},
  url = {https://pubs.usgs.gov/publication/5222915},
  note = {Source identifier: 5222915}
}