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Yellowstone NP--Wyoming (HISTORICAL DATA ONLY, NOT FOR CURRENT CHECKLISTS)
Illustrated Checklist
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Native and Naturalized (171)
Additional Taxa (10)
- Common/Barrow's Goldeneye Bucephala clangula/islandicaLast observed by Jeanene Esterholt on 8 Jun 2023
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Terry Hibbitts on 16 Jul 2007
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by George Clark on 30 Jun 1963