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Delta Park West--Columbia Slough Trail
Illustrated Checklist
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Native and Naturalized (175)
Hybrids (5)
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Nick Mrvelj on 11 Oct 2020
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Nick Mrvelj on 30 Apr 2020
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Nick Mrvelj on 23 Feb 2019
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by Nick Mrvelj on 30 Jan 2024
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Nick Mrvelj on 19 Jan 2024
Additional Taxa (26)
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Tim Murphy on 17 Oct 2020
- Western/Glaucous-winged Gull Larus occidentalis/glaucescensLast observed by Andy Frank on 12 Dec 2016
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Kyle Landstra on 8 Mar 2024