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Washington
Illustrated Checklist
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Native and Naturalized (351)
Exotic: Escapee (6)
Hybrids (4)
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Chris Bartlett on 25 Mar 2024
- Northern Pintail x Green-winged Teal (hybrid) Anas acuta x creccaLast observed by Chris Bartlett on 12 Apr 2019
- Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatusLast observed by Chris Bartlett on 3 Apr 2013
- Nelson's x Saltmarsh Sparrow (hybrid) Ammospiza nelsoni x caudacutaLast observed by Dean Hernandez on 9 Aug 2022
Additional Taxa (75)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Susan Cline on 28 Jan 2018
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by Richard MacDonald on 18 Apr 2024
- Ruffed/Spruce Grouse Bonasa umbellus/Canachites canadensisLast observed by Amy Davis on 24 Jul 2021
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by Josh Fecteau on 5 Jun 2016
- Black-bellied Plover/golden-plover sp. Pluvialis sp.Last observed by Daniel McDermott on 10 Aug 2020
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Rick Heil on 17 Sep 2023
- Western/Semipalmated Sandpiper Calidris mauri/pusillaLast observed by Jonathan Layman on 30 Jul 2023
- Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinusLast observed by Louis Bevier on 24 Sep 2020
- storm-petrel sp. (white-rumped) Oceanitidae/Hydrobatidae sp. (white-rumped)Last observed by Zach Millen on 22 Jun 2016
- black-and-white shearwater sp. Puffinus sp. (black-and-white shearwater sp.)Last observed by Lee Jones on 4 Jul 1971
- Great/Double-crested Cormorant Phalacrocorax carbo/Nannopterum auritumLast observed by Willy Hutcheson on 14 Apr 2024
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalusLast observed by Karen Holmes on 17 Apr 2024
- Downy/Hairy Woodpecker Dryobates pubescens/villosusLast observed by William Kolodnicki on 19 Apr 2024
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Jeff Cherry on 29 Aug 2023
- Gray-cheeked/Bicknell's Thrush Catharus minimus/bicknelliLast observed by Heidi Roesselet on 27 Sep 2020
- Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow) Ammospiza nelsoni/caudacutaLast observed by Claus Holzapfel on 22 Jun 2021