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Illustrated Checklist
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Native and Naturalized (249)
Exotic: Escapee (4)
Hybrids (1)
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Elizabeth Weintraub on 26 Jun 2023
Additional Taxa (41)
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by Anonymous eBirder on 9 Aug 2023
- Ruffed/Spruce Grouse Bonasa umbellus/Canachites canadensisLast observed by Michael and Anu on 3 Apr 2021
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by Doug Hitchcox on 16 Jun 2015
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Laura Robinson on 29 Jul 2023
- solitary vireo sp. Vireo cassinii/solitarius/plumbeusLast observed by Richard Knowlton on 15 Jun 1992
- Philadelphia/Red-eyed Vireo Vireo philadelphicus/olivaceusLast observed by Richard Littauer on 18 Jul 2020
- Gray-cheeked/Bicknell's Thrush Catharus minimus/bicknelliLast observed by Sharon Wilcox on 18 May 2023
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Nancy Eaton on 18 May 2019