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Illustrated Checklist
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Native and Naturalized (264)
Exotic: Escapee (4)
Hybrids (3)
- Bufflehead x Common Goldeneye (hybrid) Bucephala albeola x clangulaLast observed by Jethro Runco on 25 Mar 2020
- Calliope x Rufous Hummingbird (hybrid) Selasphorus calliope x rufusLast observed by Mary Rumple on 8 May 2021
- Black-capped x Mountain Chickadee (hybrid) Poecile atricapillus x gambeliLast observed by Roger Doucet on 19 Feb 2018
Additional Taxa (65)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Forrest Corcoran on 22 May 2022
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Dianne Cooper on 10 Sep 2011
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalusLast observed by Bruce Neville on 27 Jul 2019
- Red-naped/Red-breasted Sapsucker Sphyrapicus nuchalis/ruberLast observed by John Sherwood on 20 Jul 2021
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Carter Strope on 9 Jul 2021
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseriLast observed by Diana Roberts on 29 Apr 2023
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Marcea Marine on 11 Apr 2024
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by Lynn Bush on 18 Mar 2024
- White-crowned/White-throated Sparrow Zonotrichia leucophrys/albicollisLast observed by Lynn Bush on 21 Feb 2022