| 1 (7) | United States Department of Agriculture | USA |  |
| 2 (52) | Smithsonian Institution * | USA | |
| 3 (78) | United States Geological Survey | USA | |
| 4 (179) | Smithsonian National Museum of Natural History | USA | |
| 5 (396) | United States Fish and Wildlife Service | USA | |
| 6 (438) | American Museum of Natural History | USA | |
| 7 (445) | National Oceanic and Atmospheric Administration | USA | |
| 8 (496) | Smithsonian Conservation Biology Institute | USA | |
| 9 (585) | U.S. Army * | USA | |
| 10 (646) | Field Museum Natural History | USA | |
| 11 (1087) | University of Maryland, Center for Environmental Science | USA | |
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