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Sacramento NWR
Illustrated Checklist
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Native and Naturalized (232)
Exotic: Provisional (1)
Exotic: Escapee (1)
Hybrids (7)
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Bruce Deuel on 28 Apr 1988
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Liam Huber on 1 Dec 2021
- Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchosLast observed by Liam Huber on 27 Oct 2021
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Bruce Deuel on 29 Jan 2003
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by Liam Huber on 31 Dec 2021
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Liam Huber on 31 Dec 2021
Additional Taxa (43)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Rebecca Lawton on 29 Oct 2019
- Rufous/Allen's Hummingbird Selasphorus rufus/sasinLast observed by Danica Schaffer-Smith on 18 Apr 2015
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Dean LaTray on 19 Nov 2023
- large shorebird sp. Scolopacidae sp. (large shorebird sp.)Last observed by Liam Huber on 27 Oct 2021
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Gray Gallogly Records on 3 Dec 2000
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Michael Bolte on 10 Mar 2021
- Red-winged/Tricolored Blackbird Agelaius phoeniceus/tricolorLast observed by Andy Stepniewski on 12 Nov 2023