1. Cornell Wildlife Health Laboratory, Animal Health Diagnostic Center, Cornell School of Veterinary Medicine, 240 Farrier Road, Ithaca, New York 14853, USA
2. Wildlife Health Unit, New York State Department of Environmental Conservation, 108 Game Farm Road, Delmar, New York 12054, USA
3. Animal Health Diagnostic Center, Cornell School of Veterinary Medicine, 240 Farrier Road, Ithaca, New York 14853, USA
4. Bronx River – Sound Shore Audubon Society, PO Box 1108, Scarsdale, New York 10583, USA
5. New York State Bluebird Society, 5157 Orangeport Road, Brewerton, New York 13029, USA