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Berkeley
Illustrated Checklist
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Native and Naturalized (272)
Exotic: Escapee (2)
Hybrids (6)
- Snow x Ross's Goose (hybrid) Anser caerulescens x rossiiLast observed by Joette Borzik on 10 Jan 2018
- Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensisLast observed by Alex T on 10 Dec 2019
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Alex T on 30 Oct 2020
- Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensisLast observed by Colin Little on 12 Dec 2022
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Steve Hartmann on 1 Jan 2023
- Northern Parula x Yellow-throated Warbler (hybrid) Setophaga americana x dominicaLast observed by Historical West Virginia Data on 29 May 1950
Additional Taxa (44)
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by Curtis Dykstra on 10 Apr 2022
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by Steve Hartmann on 25 Dec 2022
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by Nicole Asplund on 22 Sep 2023
- Philadelphia/Warbling Vireo Vireo philadelphicus/gilvusLast observed by Mariam Aboutaj on 21 May 2022
- Carolina/Black-capped Chickadee Poecile carolinensis/atricapillusLast observed by Gypsy Phillips on 27 Mar 2024
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Alex T on 5 May 2022