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Island
Illustrated Checklist
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Native and Naturalized (308)
Exotic: Escapee (10)
Hybrids (7)
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Diana Traxler on 20 Apr 2024
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Steve Giles on 4 Mar 2024
- Ring-necked Duck x Lesser Scaup (hybrid) Aythya collaris x affinisLast observed by Louis Kreemer on 17 Feb 2024
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by Gideon Seraphine on 23 Apr 2024
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Carlos Andersen on 1 Jan 2024
- Barn x Cliff Swallow (hybrid) Hirundo rustica x Petrochelidon pyrrhonotaLast observed by Steven Mlodinow on 19 Aug 1995
- White-crowned x Golden-crowned Sparrow (hybrid) Zonotrichia leucophrys x atricapillaLast observed by Joshua Little on 26 Dec 2013
Additional Taxa (91)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Lou Ann Shellenberger on 2 Dec 2023
- Rock/Band-tailed Pigeon Columba livia/Patagioenas fasciataLast observed by Geoffrey Parks on 24 Aug 2008
- American/Pacific Golden-Plover (Lesser Golden-Plover) Pluvialis dominica/fulvaLast observed by Blair Bernson on 25 Aug 2021
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by MJ OnWhidbey on 21 Apr 2024
- Western/Semipalmated Sandpiper Calidris mauri/pusillaLast observed by John & Tracy Bell on 26 Aug 2021
- Western/Glaucous-winged Gull Larus occidentalis/glaucescensLast observed by Gideon Seraphine on 17 Apr 2024
- Sooty/Short-tailed Shearwater Ardenna grisea/tenuirostrisLast observed by Steven Mlodinow on 31 Oct 1999
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalusLast observed by Bart Hawkins on 6 May 2021
- Red-naped/Red-breasted Sapsucker Sphyrapicus nuchalis/ruberLast observed by Maryanne Coffey on 19 Feb 2022
- Loggerhead/Northern Shrike Lanius ludovicianus/borealisLast observed by David Poortinga on 10 Apr 2017
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Cathi Bower on 22 Apr 2024
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by Graham Hutchison on 17 Apr 2024
- Varied Thrush/American Robin Ixoreus naevius/Turdus migratoriusLast observed by Diana Traxler on 18 Feb 2024
- Black-throated Gray/Townsend's Warbler Setophaga nigrescens/townsendiLast observed by Nathan Pieplow on 20 May 2023