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Clark
Illustrated Checklist
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Native and Naturalized (312)
Exotic: Provisional (1)
Exotic: Escapee (12)
Hybrids (26)
- Snow x Greater White-fronted Goose (hybrid) Anser caerulescens x albifronsLast observed by Steven Mlodinow on 17 Feb 2007
- Snow x Cackling Goose (hybrid) Anser caerulescens x Branta hutchinsiiLast observed by Peter Zika on 29 Jan 2021
- Greater White-fronted x Cackling Goose (hybrid) Anser albifrons x Branta hutchinsiiLast observed by Cindy McCormack on 23 Jan 2024
- Barnacle x Cackling Goose (hybrid) Branta leucopsis x hutchinsiiLast observed by Scott Carpenter on 15 Mar 2011
- Swan Goose x Canada Goose (hybrid) Anser cygnoides x Branta canadensisLast observed by Clay Crofton on 24 Mar 2014
- Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensisLast observed by Randy Hill on 18 Dec 2016
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Celia Dalrymple on 11 Mar 2018
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Marcus Miller on 30 May 2022
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by David Irons on 22 May 2023
- Blue-winged Teal x Northern Shoveler (hybrid) Spatula discors x clypeataLast observed by Jim Danzenbaker on 11 Feb 2023
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Ken Pitts on 25 Mar 2024
- American Wigeon x Mallard (hybrid) Mareca americana x Anas platyrhynchosLast observed by Jen Sanford on 8 Jan 2011
- Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acutaLast observed by Randy Hill on 2 Nov 2019
- Ring-necked Duck x Lesser Scaup (hybrid) Aythya collaris x affinisLast observed by Steven Mlodinow on 17 Feb 2007
- Tufted Duck x Lesser Scaup (hybrid) Aythya fuligula x affinisLast observed by Randy Hill on 30 Mar 2022
- Tufted Duck x scaup sp. (hybrid) Aythya fuligula x marila/affinisLast observed by Jim Danzenbaker on 26 Mar 2024
- Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkiiLast observed by Jim Danzenbaker on 15 Apr 2024
- Anna's Hummingbird x Selasphorus sp. (hybrid) Calypte anna x Selasphorus sp.Last observed by Daniel Knapp on 3 Apr 2022
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Jim Danzenbaker on 29 Nov 2023
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by Jim Danzenbaker on 26 Mar 2024
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Leslie Schweitzer on 1 Jan 2024
- Glaucous x Glaucous-winged Gull (hybrid) Larus hyperboreus x glaucescensLast observed by john bishop on 18 Feb 2017
- Red-naped x Red-breasted Sapsucker (hybrid) Sphyrapicus nuchalis x ruberLast observed by Jacob Durrent on 5 Mar 2022
- Black-capped x Mountain Chickadee (hybrid) Poecile atricapillus x gambeliLast observed by Jim Johnson on 3 Feb 2020
- White-crowned x Golden-crowned Sparrow (hybrid) Zonotrichia leucophrys x atricapillaLast observed by Ann Swanson on 20 Apr 2023
- Townsend's x Hermit Warbler (hybrid) Setophaga townsendi x occidentalisLast observed by Jim Danzenbaker on 15 Aug 2023
Additional Taxa (90)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Glenn Laubaugh on 11 Feb 2024
- Common/Barrow's Goldeneye Bucephala clangula/islandicaLast observed by Sarah Hoepfner on 29 Mar 2024
- Ring-necked/Green Pheasant Phasianus colchicus/versicolorLast observed by MJ Blackman on 9 Jan 2023
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiLast observed by Thomas Tinsley on 14 Nov 2023
- Eurasian/African Collared-Dove Streptopelia decaocto/roseogriseaLast observed by Morgan Neal on 11 Mar 2022
- American/Pacific Golden-Plover (Lesser Golden-Plover) Pluvialis dominica/fulvaLast observed by Bill Shelmerdine on 11 Sep 1992
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Mark Singer on 20 Mar 2024
- Western/Glaucous-winged Gull Larus occidentalis/glaucescensLast observed by Jason Taylor on 16 Feb 2024
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Anonymous eBirder on 13 Apr 2024
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalusLast observed by Tracy Zitzelberger on 28 Jan 2018
- California/Woodhouse's Scrub-Jay Aphelocoma californica/woodhouseiiLast observed by Scott Deckelmann on 13 Jul 2016
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Thomas Tinsley on 16 Apr 2024
- Varied Thrush/American Robin Ixoreus naevius/Turdus migratoriusLast observed by Anonymous eBirder on 18 Feb 2024
- Townsend's/Hermit Warbler Setophaga townsendi/occidentalisLast observed by Cindy McCormack on 2 Sep 2023
- Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalusLast observed by Cindy McCormack on 17 Sep 2021