@misc{indiciae8ac2ee691c03,
  title = {Population trends of blackbirds and starlings in North America, 1966-76},
  author = {Richard A. Dolbeer and Robert A. Stehn},
  year = {1979},
  url = {https://pubs.usgs.gov/publication/ssrw214},
  note = {Source identifier: ssrw214}
}