1. Schubot Exotic Bird Health Center, Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas 77843, USA
2. Department of Large Animal Medicine and Surgery, Texas A&M University, College Station, Texas 77843, USA
3. Current address: Idaho Department of Fish and Game, Boise, Idaho, USA
4. Texas Parks and Wildlife Department, 4200 Smith School Road, Austin, Texas 78744, USA
5. Current address: ABC Animal and Bird Clinic 11930 Highway 6 South, Sugar Land, Texas 77478, USA
6. U.S. Geological Survey, Wildlife and Fisheries Science Department, Texas A&M University, College Station, Texas 77843, USA