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Helena Valley Regulating Reservoir
Illustrated Checklist
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Native and Naturalized (227)
Exotic: Escapee (1)
Hybrids (3)
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Kyle Strode on 22 Apr 2021
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Grant Hokit on 6 Apr 2024
- Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkiiLast observed by Andrew Guttenberg on 7 Nov 2020
Additional Taxa (42)
- Common/Barrow's Goldeneye Bucephala clangula/islandicaLast observed by Dalton Spencer on 22 Oct 2022
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by Stephen Turner on 22 Apr 2023
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Stephen Turner on 26 Jul 2022
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Ramona Kay on 27 Aug 2019
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseriLast observed by Jeffrey Olsson on 4 Jun 2022