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Tualatin River NWR
Illustrated Checklist
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Native and Naturalized (215)
Exotic: Escapee (4)
Hybrids (6)
- Greater White-fronted x Cackling Goose (hybrid) Anser albifrons x Branta hutchinsiiLast observed by Clay Crofton on 12 Feb 2014
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Rick MacDonald on 27 Aug 2017
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Jeff Hayes on 14 Dec 2013
- Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchosLast observed by David Irons on 1 Jun 2013
- Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acutaLast observed by Jeff Hayes on 14 Dec 2013
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by John Leonard on 27 Nov 2019
Additional Taxa (33)
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Misty Hampton on 15 Sep 2023