1. Agricultural Research Service U.S. Department of Agriculture Sidney MT USA
2. Eastern Ecological Science Center at the Patuxent Research RefugeU.S. Geological Survey Laurel MD USA
3. Alaska Science Center U.S. Geological Survey Anchorage AK USA
4. University of Maryland College Park MD USA
5. Ecotoxicology and Wildlife Health Division Environment and Climate Change Canada, Saskatoon Saskatchewan CA USA
6. Louisiana Department of Wildlife and Fisheries Baton Rouge LA USA
7. Texas Chenier Plain Refuge Complex U.S. Fish and Wildlife Service Anahuac TX USA