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Hamilton
Illustrated Checklist
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Native and Naturalized (324)
Exotic: Escapee (7)
Hybrids (11)
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Thomas Czubek on 13 Jan 2013
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Jack Verdin on 15 Mar 2019
- Blue-winged Teal x Northern Shoveler (hybrid) Spatula discors x clypeataLast observed by Joshua Eastlake on 23 Jan 2022
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Tyler Ficker on 15 Mar 2014
- Muscovy Duck x Mallard (hybrid) Cairina moschata x Anas platyrhynchosLast observed by Joshua Burd on 29 Aug 2021
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Kurk Dorsey on 1 Jan 2024
- Glossy x White-faced Ibis (hybrid) Plegadis falcinellus x chihiLast observed by John Habig on 4 May 2013
- Golden-winged x Blue-winged Warbler (hybrid) Vermivora chrysoptera x cyanopteraLast observed by John Habig on 3 May 2014
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by John Habig on 3 May 2014
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by Brian Herriott on 3 May 2016
Additional Taxa (87)
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by David Brinkman on 6 Jul 2023
- Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandriLast observed by David Brinkman on 24 Aug 2003
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Steven Yockey on 17 May 2023
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Martin Werner on 17 Apr 2024
- Cooper's Hawk/American Goshawk Accipiter cooperii/atricapillusLast observed by David Brinkman on 26 Sep 2020
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by wendy ambrefe on 19 May 2023
- Philadelphia/Red-eyed Vireo Vireo philadelphicus/olivaceusLast observed by David Brinkman on 5 May 2005
- Carolina/Black-capped Chickadee Poecile carolinensis/atricapillusLast observed by Sima Finy on 29 Dec 2020
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by David Brinkman on 16 Apr 2018
- Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.Last observed by Steve Pelikan on 12 Feb 2023
- LeConte's/Nelson's Sparrow Ammospiza leconteii/nelsoniLast observed by David Brinkman on 2 Oct 2013
- Grasshopper/Henslow's Sparrow Ammodramus savannarum/Centronyx henslowiiLast observed by Brian Wulker on 11 Oct 2015
- Rusty/Brewer's Blackbird Euphagus carolinus/cyanocephalusLast observed by David Brinkman on 31 Mar 2006
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Connor Fox on 11 May 2023
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Darrell Hance on 26 Aug 2023