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Jefferson
Illustrated Checklist
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Native and Naturalized (329)
Exotic: Escapee (9)
Hybrids (6)
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Danny Alexander on 13 Jan 2024
- Blue-winged Teal x Northern Shoveler (hybrid) Spatula discors x clypeataLast observed by Brainard Palmer-Ball on 27 Mar 2015
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by deborah feige on 22 Jan 2024
- Laughing x Ring-billed Gull (hybrid) Leucophaeus atricilla x Larus delawarensisLast observed by David Bailey on 17 Dec 2023
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Pat Bell on 30 Apr 2020
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by Ellen Mershon on 2 May 2020
Additional Taxa (80)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Marianne Henze on 19 Mar 2024
- Trumpeter/Tundra Swan Cygnus buccinator/columbianusLast observed by Resource Designs on 11 Jan 2023
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by cooper Whaley on 8 Sep 2022
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by Michael Riggs on 26 Jun 2023
- Black-bellied Plover/golden-plover sp. Pluvialis sp.Last observed by Tom and/or Colleen Becker on 4 Sep 2017
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Brian Davis on 14 May 2014
- Lesser/Greater Yellowlegs Tringa flavipes/melanoleucaLast observed by Andrew Melnykovych on 26 Apr 2024
- Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violaceaLast observed by Kevin F on 1 Jul 2023
- Red-shouldered/Broad-winged Hawk Buteo lineatus/platypterusLast observed by Joseph Purdy on 8 Dec 2023
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Meg Brown on 21 May 2023
- Philadelphia/Warbling Vireo Vireo philadelphicus/gilvusLast observed by major waltman on 17 Sep 2023
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by Doris Proctor Hoffman on 16 Apr 2024
- Rusty/Brewer's Blackbird Euphagus carolinus/cyanocephalusLast observed by Sally Long on 11 Nov 2023
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Scott Dickman on 7 May 2023
- Golden-winged/Blue-winged Warbler Vermivora chrysoptera/cyanopteraLast observed by Luke Pearson on 17 May 2020
- Connecticut/MacGillivray's/Mourning Warbler Oporornis/Geothlypis sp. (Mourning-type)Last observed by Brainard Palmer-Ball on 15 May 2023
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Katie Burke on 17 Sep 2023