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Essex
Illustrated Checklist
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Native and Naturalized (232)
Hybrids (1)
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Martha McClintock on 10 Apr 2023
Additional Taxa (44)
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by Rebecca Ross on 14 May 2023
- Ruffed/Spruce Grouse Bonasa umbellus/Canachites canadensisLast observed by Jeff MacQueen on 13 Apr 2024
- Lesser/Greater Yellowlegs Tringa flavipes/melanoleucaLast observed by thomas berriman on 27 Aug 2023
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by thomas berriman on 1 Jan 2024
- diurnal raptor sp. Accipitriformes/Falconiformes sp.Last observed by Richard Littauer on 14 Aug 2019
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Susan Elliott on 14 Sep 2023
- Philadelphia/Warbling Vireo Vireo philadelphicus/gilvusLast observed by Anonymous ebirder on 6 Sep 2020
- Philadelphia/Red-eyed Vireo Vireo philadelphicus/olivaceusLast observed by Jeremiah Trimble on 31 Jul 2022
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by Frank Lehman on 23 Mar 2018
- Gray-cheeked/Bicknell's Thrush Catharus minimus/bicknelliLast observed by Scott Schwenk on 28 May 2023
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Eric Huston on 21 Aug 2016