@misc{indiciae8cf8e510e973, title = {Regional patterns in proportion of bird species detected in the North American Breeding Bird Survey}, author = {J.R. Sauer and J.D. Nichols and J.E. Hines and T. Boulinier and C.H. Flather and W. L. Kendall}, year = {2001}, url = {https://pubs.usgs.gov/publication/5211388}, note = {Source identifier: 5211388} }