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Yellowstone NP--Slough Creek
Illustrated Checklist
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Native and Naturalized (159)
Hybrids (1)
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Louis Kreemer on 7 May 2023
Additional Taxa (23)
- Common/Barrow's Goldeneye Bucephala clangula/islandicaLast observed by John Johansen on 31 Jul 2023
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseriLast observed by Gayle Bachert on 21 Jun 2021
- Black-capped/Mountain Chickadee Poecile atricapillus/gambeliLast observed by Ryan Tomazin on 20 Jun 2021