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Allegheny
Illustrated Checklist
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Native and Naturalized (302)
Exotic: Escapee (8)
Hybrids (12)
- Graylag x Swan Goose (hybrid) Anser anser x cygnoidesLast observed by Andrew Kingfisher on 13 Feb 2022
- Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensisLast observed by Chris Kubiak on 14 Jul 2021
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Ron Burkert on 28 Oct 2021
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by David Yeany II on 31 Jan 2017
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Corvus 𓄿 on 15 Apr 2024
- Redhead x Ring-necked Duck (hybrid) Aythya americana x collarisLast observed by Shannon Thompson on 31 Mar 2015
- Herring x Great Black-backed Gull (hybrid) Larus argentatus x marinusLast observed by Geoff Malosh on 26 Feb 2015
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Geoff Malosh on 12 Feb 2018
- Carolina x Black-capped Chickadee (hybrid) Poecile carolinensis x atricapillusLast observed by Eileen Luba on 15 Apr 2024
- Golden-winged x Blue-winged Warbler (hybrid) Vermivora chrysoptera x cyanopteraLast observed by Dan Mendenhall on 13 Sep 2023
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Michelle Kienholz on 7 May 2023
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by Sean Mueseler on 6 May 2023
Additional Taxa (78)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Amber Pertz on 26 Jan 2024
- Lesser/Greater Yellowlegs Tringa flavipes/melanoleucaLast observed by Parker Bradley on 19 May 2022
- large shorebird sp. Scolopacidae sp. (large shorebird sp.)Last observed by Trip Bondi on 21 Jul 2023
- Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violaceaLast observed by Joe Papp on 9 Aug 2023
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Steve Northrop on 14 Apr 2024
- Red-shouldered/Broad-winged Hawk Buteo lineatus/platypterusLast observed by Geoff Malosh on 7 Apr 2018
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Kate StJohn on 19 Sep 2023
- Philadelphia/Warbling Vireo Vireo philadelphicus/gilvusLast observed by Robert VanNewkirk on 7 Sep 2012
- Philadelphia/Red-eyed Vireo Vireo philadelphicus/olivaceusLast observed by Trip Bondi on 19 Aug 2023
- Carolina/Black-capped Chickadee Poecile carolinensis/atricapillusLast observed by Nathaniel Bowler on 18 Apr 2024
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by Oscar Nigam on 26 Oct 2020
- Lincoln's/Swamp Sparrow Melospiza lincolnii/georgianaLast observed by Geoff Malosh NFC Station 450 on 1 Nov 2017
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Adrian Fenton on 1 May 2023
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Aidan Place on 11 Sep 2016