1. Arizona Cooperative Fish and Wildlife Research Unit, School of Natural Resources and the Environment, University of Arizona, Tucson, AZ 85721 USA
2. US Geological Survey, Arizona Cooperative Fish and Wildlife Research Unit, School of Natural Resources and the Environment, University of Arizona, Tucson, AZ 85721 USA
3. Environment Canada (retired), 54–51520 RR200A, Beaver County, AB T0B 4J1 Canada
4. Coordinación de Vigilancia Epidemiológica en Aves Silvestres CPA – DGSA – SENASICA, Km 15.5 Carr, México-Toluca, Col. Palo Alto, Cuajimalpa de Morelos, C.P. 05110 CDMX México