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Illustrated Checklist
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Native and Naturalized (331)
Exotic: Provisional (1)
Exotic: Escapee (9)
Hybrids (15)
- Swan Goose x Canada Goose (hybrid) Anser cygnoides x Branta canadensisLast observed by Howard Friedman on 4 Nov 2023
- Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensisLast observed by Geoffrey Helmbold on 26 Sep 2013
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Julie Doerr on 27 Feb 2023
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Dessi Sieburth on 29 Apr 2023
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Chris Howard on 29 Jan 2017
- Muscovy Duck x Mallard (hybrid) Cairina moschata x Anas platyrhynchosLast observed by Ashley Byers on 2 Apr 2024
- Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandicaLast observed by logan kahle on 28 Dec 2020
- Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatusLast observed by Larry Siemens on 25 Jan 2024
- Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkiiLast observed by Gautam Apte on 22 May 2022
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Bruce Deuel on 3 Jan 2006
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by Geoffrey Helmbold on 30 Jan 2017
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Lucas stephenson on 7 Jan 2020
- Red-naped x Red-breasted Sapsucker (hybrid) Sphyrapicus nuchalis x ruberLast observed by David Pluth on 17 Feb 2024
- White-crowned x White-throated Sparrow (hybrid) Zonotrichia leucophrys x albicollisLast observed by Kurt Ongman on 24 Jan 2021
- Rose-breasted x Black-headed Grosbeak (hybrid) Pheucticus ludovicianus x melanocephalusLast observed by Bob and Carol Yutzy on 31 May 2010
Additional Taxa (78)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Larry Jordan on 29 Nov 2020
- Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandriLast observed by Ken Burton on 12 Nov 2023
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Kirsti Carr on 13 Aug 2023
- Western/Glaucous-winged Gull Larus occidentalis/glaucescensLast observed by Bruce Deuel on 28 Apr 2006
- Cooper's Hawk/American Goshawk Accipiter cooperii/atricapillusLast observed by Dan Murphy on 23 Aug 1989
- diurnal raptor sp. Accipitriformes/Falconiformes sp.Last observed by Courtney Kelly Jett on 15 Apr 2018
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseriLast observed by Will Harrod on 20 May 2022
- solitary vireo sp. Vireo cassinii/solitarius/plumbeusLast observed by Richard Redmond cc on 22 Jul 1997
- California/Woodhouse's Scrub-Jay Aphelocoma californica/woodhouseiiLast observed by Pamela Jennings on 7 May 2014
- Oak/Juniper Titmouse (Plain Titmouse) Baeolophus inornatus/ridgwayiLast observed by Eric Ongman on 30 Nov 2020
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Dominik Mosur on 2 Jul 2023
- Sagebrush/Bell's Sparrow (Sage Sparrow) Artemisiospiza nevadensis/belliLast observed by Brooke McDonald on 15 Apr 2016
- Black-throated Gray/Hermit Warbler Setophaga nigrescens/occidentalisLast observed by Jonah Benningfield on 16 Aug 2020
- Townsend's/Hermit Warbler Setophaga townsendi/occidentalisLast observed by ned bohman on 18 Apr 2021