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Illustrated Checklist
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Native and Naturalized (406)
Exotic: Escapee (45)
Hybrids (29)
- Snow x Ross's Goose (hybrid) Anser caerulescens x rossiiLast observed by Matthew Igleski on 7 Mar 2017
- Swan Goose x Canada Goose (hybrid) Anser cygnoides x Branta canadensisLast observed by Eric D Gyllenhaal on 9 Feb 2012
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Geoffrey A. Williamson on 5 Nov 2011
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Paul R. Clyne on 6 Mar 2005
- Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensisLast observed by Ian Sarmiento on 11 Nov 2020
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Glenn Giacinto on 23 Apr 2020
- Blue-winged Teal x Northern Shoveler (hybrid) Spatula discors x clypeataLast observed by Linda Stwora on 21 Apr 2024
- Gadwall x American Wigeon (hybrid) Mareca strepera x americanaLast observed by Walter Marcisz on 11 Apr 2014
- Wood Duck x Mallard (hybrid) Aix sponsa x Anas platyrhynchosLast observed by Eric Walters on 20 Dec 1994
- Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchosLast observed by Peter Walton on 21 Sep 2021
- American Wigeon x Mallard (hybrid) Mareca americana x Anas platyrhynchosLast observed by Paul Senner on 16 Apr 2024
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Martin Berg on 31 Mar 2024
- Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acutaLast observed by Connor Sullivan on 23 Apr 2024
- Redhead x Lesser Scaup (hybrid) Aythya americana x affinisLast observed by Andrew S. Aldrich on 25 Jan 2014
- Bufflehead x Common Goldeneye (hybrid) Bucephala albeola x clangulaLast observed by Terry Walsh on 12 Feb 2019
- Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatusLast observed by Erick Masias on 19 Dec 2023
- Laughing x Ring-billed Gull (hybrid) Leucophaeus atricilla x Larus delawarensisLast observed by Matt Kalwasinski on 1 Oct 2023
- Kelp x Herring Gull (hybrid) Larus dominicanus x argentatusLast observed by Ben Sanders on 20 Jan 2018
- Herring x Great Black-backed Gull (hybrid) Larus argentatus x marinusLast observed by Henry Griffin on 28 Jan 2021
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Steve Huggins on 9 Jan 2022
- Herring x California Gull (hybrid) Larus argentatus x californicusLast observed by Anonymous eBirber on 26 Jul 2023
- Little Blue Heron x Snowy Egret (hybrid) Egretta caerulea x thulaLast observed by Eric Ginsburg on 21 Sep 2021
- Dark-eyed Junco x White-throated Sparrow (hybrid) Junco hyemalis x Zonotrichia albicollisLast observed by Kate Ranft on 10 Jan 2021
- Spotted x Eastern Towhee (hybrid) Pipilo maculatus x erythrophthalmusLast observed by Timothy Balassie on 7 Sep 2023
- Golden-winged x Blue-winged Warbler (hybrid) Vermivora chrysoptera x cyanopteraLast observed by Marky Mutchler on 17 Sep 2023
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Janet Pellegrini on 12 May 2023
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by Jeff Bilsky on 30 Aug 2022
- Townsend's x Black-throated Green Warbler (hybrid) Setophaga townsendi x virensLast observed by Ben Kerstetter on 5 Sep 2020
Additional Taxa (161)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Leann Larkins on 22 Apr 2024
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by Jordan Guzman on 22 Apr 2024
- Common/Barrow's Goldeneye Bucephala clangula/islandicaLast observed by Milt Adair Historical Data on 10 Mar 1957
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by Suzanne Coleman on 8 Apr 2024
- Ring-necked/Green Pheasant Phasianus colchicus/versicolorLast observed by Camille Blachowicz on 1 Jun 2023
- Eurasian/African Collared-Dove Streptopelia decaocto/roseogriseaLast observed by Andre Vu on 8 Mar 2024
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by Josh Engel on 9 Sep 2023
- Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandriLast observed by Stacy Baughman on 17 Jul 2022
- moorhen/coot/gallinule sp. Gallinula/Fulica/Porphyrio sp.Last observed by William Pixler on 30 Aug 2023
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Alex Haza on 16 Sep 2023
- Red/Red-necked Phalarope Phalaropus fulicarius/lobatusLast observed by Harriet Rylaarsdam Historical Data on 4 Dec 1977
- Lesser/Greater Yellowlegs Tringa flavipes/melanoleucaLast observed by Charlotte Farrell on 23 Apr 2024
- Western/Semipalmated Sandpiper Calidris mauri/pusillaLast observed by Stephanie Minaya on 9 Jul 2023
- large shorebird sp. Scolopacidae sp. (large shorebird sp.)Last observed by Anonymous eBirber on 6 Aug 2023
- Long-tailed/Parasitic Jaeger Stercorarius longicaudus/parasiticusLast observed by Andrea Tolzmann on 17 Sep 2023
- Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinusLast observed by Marky Mutchler on 14 Oct 2023
- Laughing/Franklin's Gull Leucophaeus atricilla/pipixcanLast observed by Andrew S. Aldrich on 22 Jun 2019
- Double-crested/Neotropic Cormorant Nannopterum auritum/brasilianumLast observed by Andrew S. Aldrich on 3 Aug 2019
- Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violaceaLast observed by Peggy Hardwick on 11 Aug 2023
- Cooper's Hawk/American Goshawk Accipiter cooperii/atricapillusLast observed by Ellen Douglas on 12 Sep 2021
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalusLast observed by Sole Sunshine de Vries on 1 Nov 2020
- Red-shouldered/Broad-winged Hawk Buteo lineatus/platypterusLast observed by Eric D Gyllenhaal on 13 Oct 2023
- Downy/Hairy Woodpecker Dryobates pubescens/villosusLast observed by brooke schneider on 19 Apr 2024
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Andrew Dreelin on 7 Oct 2023
- Cassin's/Blue-headed Vireo Vireo cassinii/solitariusLast observed by Alan Seelye-James on 15 May 2020
- Philadelphia/Red-eyed Vireo Vireo philadelphicus/olivaceusLast observed by Hazem Alkhan on 4 Sep 2023
- Red-eyed/Yellow-green Vireo Vireo olivaceus/flavoviridisLast observed by Harriet Rylaarsdam Historical Data on 14 Sep 1988
- Loggerhead/Northern Shrike Lanius ludovicianus/borealisLast observed by Susan Carton on 23 Dec 2023
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by Matt Newman on 20 Apr 2024
- Sedge/Marsh Wren Cistothorus stellaris/palustrisLast observed by Karin Cassel Historical Data on 21 Apr 2001
- Bohemian/Cedar Waxwing Bombycilla garrulus/cedrorumLast observed by Karin Cassel Historical Data on 25 Oct 1993
- Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.Last observed by Phillip Stosberg on 19 Apr 2024
- Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow) Ammospiza nelsoni/caudacutaLast observed by Eric Walters on 16 May 1992
- Grasshopper/Henslow's Sparrow Ammodramus savannarum/Centronyx henslowiiLast observed by Karin Cassel Historical Data on 7 Jul 2002
- Spotted/Eastern Towhee (Rufous-sided Towhee) Pipilo maculatus/erythrophthalmusLast observed by James Sipiora on 24 Dec 2019
- Bullock's/Baltimore Oriole Icterus bullockii/galbulaLast observed by Harriet Rylaarsdam Historical Data on 5 May 1988
- Rusty/Brewer's Blackbird Euphagus carolinus/cyanocephalusLast observed by Peter Tolzmann on 14 Apr 2024
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Lila Evans on 23 Apr 2024
- Golden-winged/Blue-winged Warbler Vermivora chrysoptera/cyanopteraLast observed by Paul R. Clyne on 8 May 2021
- Connecticut/MacGillivray's/Mourning Warbler Oporornis/Geothlypis sp. (Mourning-type)Last observed by Martin Kaehrle on 14 May 2023
- MacGillivray's/Mourning Warbler Geothlypis tolmiei/philadelphiaLast observed by Paul R. Clyne on 22 Oct 1981
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Judith Cheske on 6 Oct 2023