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Don Edwards NWR--Env. Ed. Ctr. (EEC) and nearby upland areas
Illustrated Checklist
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Native and Naturalized (220)
Exotic: Provisional (1)
Exotic: Escapee (1)
Hybrids (6)
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Alex Rinkert on 7 Feb 2017
- Cinnamon Teal x Northern Shoveler (hybrid) Spatula cyanoptera x clypeataLast observed by Laura Forrest on 28 Oct 2022
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Michael Rogers on 21 Jan 2023
- Anna's x Costa's Hummingbird (hybrid) Calypte anna x costaeLast observed by Steve Rottenborn on 20 Mar 1998
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by Alex Cho on 16 Jan 2022
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Alex Cho on 16 Jan 2022
Additional Taxa (29)
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiLast observed by Anonymous eBirder on 18 Apr 2021
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by B T on 25 Apr 2024
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Satomi Fujikawa on 21 Dec 2021
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Michael Rogers on 21 Jan 2024