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Wyoming
Illustrated Checklist
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Native and Naturalized (239)
Exotic: Escapee (3)
Hybrids (4)
- Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensisLast observed by Tom Boyle on 30 Sep 2023
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Susan Petty on 5 Mar 2023
- Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensisLast observed by Eric Zawatski on 13 Mar 2019
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Tom Boyle on 6 Mar 2024
Additional Taxa (36)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Susan Petty on 29 Mar 2024
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by Stanley Bochak on 9 Apr 2022
- Ring-necked/Green Pheasant Phasianus colchicus/versicolorLast observed by Joe DeMarco on 2 Nov 2022
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Tom Boyle on 2 Sep 2022
- Carolina/Black-capped Chickadee Poecile carolinensis/atricapillusLast observed by Chris DeMarco on 28 Dec 2010
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Molly Giles on 24 Apr 2020