Author:

Thomas Schulenberg

Collaborating organization:
U.S. Fish & Wildlife Service

For providing photo resources, we thank:
Linda Alley, Allen F. Foster, Eduardo Iñigo-Elias, Greg Lavaty, Barth Schorr, and Christopher Wood

For providing audio resources, we thank the Macaulay Libraray of Natural Sounds (MLNS), Cornell Lab of Ornithology

For answering queries, providing research materials, and other assistance, we thank:

Tammy Bishop, Miyoko Chu, Dan Danowski, Jeff Gerbracht, Eduardo Iñigo-Elias, Kenneth V. Rosenberg, Brian Sullivan, and Paul W. Sykes, Jr.