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Wisconsin
Illustrated Checklist
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Native and Naturalized (458)
Exotic: Provisional (3)
Exotic: Escapee (35)
Hybrids (43)
- Snow x Ross's Goose (hybrid) Anser caerulescens x rossiiLast observed by Nicole Seward on 24 Sep 2022
- Snow x Greater White-fronted Goose (hybrid) Anser caerulescens x albifronsLast observed by Aaron Stutz on 10 Mar 2024
- Ross's x Greater White-fronted Goose (hybrid) Anser rossii x albifronsLast observed by Ted Keyel on 17 Mar 2018
- Snow x Cackling Goose (hybrid) Anser caerulescens x Branta hutchinsiiLast observed by K K on 6 Apr 2024
- Swan Goose x Canada Goose (hybrid) Anser cygnoides x Branta canadensisLast observed by Galen Hasler on 21 Oct 2022
- Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensisLast observed by Aaron Stutz on 19 Feb 2024
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Aquila Maximus on 24 Nov 2023
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Eddie and Grace on 13 Jan 2024
- Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensisLast observed by Matt Herzmann on 14 Apr 2024
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Steve Thiessen on 20 Apr 2024
- Northern Shoveler x Gadwall (hybrid) Spatula clypeata x Mareca streperaLast observed by Brian Reinke on 10 Apr 2018
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaLast observed by Jim Frank on 2 Apr 2021
- Muscovy Duck x Mallard (hybrid) Cairina moschata x Anas platyrhynchosLast observed by Milwaukee County Parks Natural Areas Staff on 11 Apr 2024
- Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchosLast observed by Logan Lasee on 20 Jan 2024
- American Wigeon x Mallard (hybrid) Mareca americana x Anas platyrhynchosLast observed by Emily Hjalmarson on 6 Nov 2022
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Edward Borntrager on 13 Apr 2024
- Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acutaLast observed by Mike Ellery on 4 Mar 2024
- Redhead x Lesser Scaup (hybrid) Aythya americana x affinisLast observed by Martin Kaehrle on 23 Apr 2023
- Ring-necked Duck x Lesser Scaup (hybrid) Aythya collaris x affinisLast observed by Stuart Malcolm on 14 Apr 2017
- Bufflehead x Common Goldeneye (hybrid) Bucephala albeola x clangulaLast observed by Aaron Stutz on 1 Feb 2020
- Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandicaLast observed by Jay Watson on 24 Jan 2023
- Wood Duck x Hooded Merganser (hybrid) Aix sponsa x Lophodytes cucullatusLast observed by Kyle Lindemer on 11 Oct 2013
- Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatusLast observed by Jayson Giese on 1 Mar 2024
- goldeneye sp. x Hooded Merganser (hybrid) Bucephala clangula/islandica x Lophodytes cucullatusLast observed by Jack Swelstad on 19 Jan 2013
- Hooded x Common Merganser (hybrid) Lophodytes cucullatus x Mergus merganserLast observed by Daryl Christensen on 24 Jun 2015
- Sharp-tailed Grouse x Greater Prairie-Chicken (hybrid) Tympanuchus phasianellus x cupidoLast observed by WSORC Data on 22 Apr 1993
- Sandhill x Whooping Crane (hybrid) Antigone canadensis x Grus americanaLast observed by Melody Walsh on 24 Jun 2015
- Dunlin x White-rumped Sandpiper (hybrid) Calidris alpina x fuscicollisLast observed by Ryan Brady on 24 May 2012
- Laughing x Ring-billed Gull (hybrid) Leucophaeus atricilla x Larus delawarensisLast observed by Sean Fitzgerald on 6 Jul 2005
- Herring x Great Black-backed Gull (hybrid) Larus argentatus x marinusLast observed by Joel Trick on 15 Jan 2023
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Clinton Dexter-Nienhaus on 5 Nov 2023
- Great Black-backed x Glaucous Gull (hybrid) Larus marinus x hyperboreusLast observed by Rita Flores Wiskowski on 15 Feb 2020
- Herring x Lesser Black-backed Gull (hybrid) Larus argentatus x fuscusLast observed by Brad Bumgardner on 4 Apr 2023
- Glossy x White-faced Ibis (hybrid) Plegadis falcinellus x chihiLast observed by Caleb Frome on 29 Apr 2020
- Eastern x Mountain Bluebird (hybrid) Sialia sialis x currucoidesLast observed by Ted Keyel on 5 Jul 2020
- House x Eurasian Tree Sparrow (hybrid) Passer domesticus x montanusLast observed by Nick Anich on 19 Mar 2023
- White-crowned x Harris's Sparrow (hybrid) Zonotrichia leucophrys x querulaLast observed by Thomas Schultz on 3 Oct 2019
- Spotted x Eastern Towhee (hybrid) Pipilo maculatus x erythrophthalmusLast observed by Fred Dike on 30 Dec 2017
- Golden-winged x Blue-winged Warbler (hybrid) Vermivora chrysoptera x cyanopteraLast observed by logan kahle on 1 Aug 2022
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Rebecca Rucker-Keegan on 7 Sep 2023
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by Alan Sherkow on 31 Aug 2023
- Northern Parula x Yellow-throated Warbler (hybrid) Setophaga americana x dominicaLast observed by Jack Swelstad on 16 May 2011
Additional Taxa (171)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Shelley Hildebrandt on 22 Apr 2024
- Blue-winged/Cinnamon Teal Spatula discors/cyanopteraLast observed by Barbara Kellermann on 27 Apr 2019
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by Brock Bonneville on 13 Apr 2024
- Common/Barrow's Goldeneye Bucephala clangula/islandicaLast observed by Candace Evans on 15 Dec 2023
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by Kevin McKown on 22 Apr 2024
- Ruffed/Spruce Grouse Bonasa umbellus/Canachites canadensisLast observed by Dana Lotz on 14 Apr 2024
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiLast observed by Cynthia Bridge on 23 Sep 2017
- Smooth-billed/Groove-billed Ani Crotophaga ani/sulcirostrisLast observed by WSORC Data on 19 Oct 1987
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by Marcus Brown on 7 Sep 2023
- Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandriLast observed by Kimberlyn Mueller on 11 Oct 2017
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Alenka Weinhold on 2 Nov 2023
- Lesser/Greater Yellowlegs Tringa flavipes/melanoleucaLast observed by Matthew Whitley on 21 Apr 2024
- Western/Semipalmated Sandpiper Calidris mauri/pusillaLast observed by Charles Sontag on 28 Aug 2023
- large shorebird sp. Scolopacidae sp. (large shorebird sp.)Last observed by Aaron Holschbach on 23 Apr 2022
- Long-tailed/Parasitic Jaeger Stercorarius longicaudus/parasiticusLast observed by Sam Corbo on 28 Sep 2023
- Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinusLast observed by Ryan Brady on 7 Nov 2021
- Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violaceaLast observed by Thomas Wood on 9 Aug 2022
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Chuck Heikkinen on 22 Apr 2024
- Cooper's Hawk/American Goshawk Accipiter cooperii/atricapillusLast observed by Kathleen Kascewicz on 26 Mar 2024
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalusLast observed by William Smith on 25 Feb 2024
- Red-shouldered/Broad-winged Hawk Buteo lineatus/platypterusLast observed by joe yamato on 14 Oct 2023
- Downy/Hairy Woodpecker Dryobates pubescens/villosusLast observed by Megan Fitzgerald on 22 Apr 2024
- diurnal raptor sp. Accipitriformes/Falconiformes sp.Last observed by Nicholas Walton on 21 Apr 2024
- Western/Eastern Wood-Pewee Contopus sordidulus/virensLast observed by Spencer Parkinson on 3 Oct 2016
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Jeremy Meyer on 7 Oct 2023
- Tropical/Couch's Kingbird Tyrannus melancholicus/couchiiLast observed by Melody Walsh on 5 Jun 2011
- yellow-bellied kingbird sp. Tyrannus sp. (yellow-bellied)Last observed by Jeff Davis on 19 May 2016
- solitary vireo sp. Vireo cassinii/solitarius/plumbeusLast observed by Mike Sandstrom on 30 Sep 2010
- Philadelphia/Red-eyed Vireo Vireo philadelphicus/olivaceusLast observed by Judy Kujoth on 27 May 2022
- Loggerhead/Northern Shrike Lanius ludovicianus/borealisLast observed by Cynthia Sellon on 22 Apr 2024
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by Anonymous eBirder on 12 Oct 2023
- Varied Thrush/American Robin Ixoreus naevius/Turdus migratoriusLast observed by Robert Lange on 17 Mar 2021
- Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.Last observed by Ruger Peavey on 17 Apr 2024
- White-crowned/White-throated Sparrow Zonotrichia leucophrys/albicollisLast observed by Arul Nandhi on 28 May 2021
- Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow) Ammospiza nelsoni/caudacutaLast observed by Leah Leonhard on 2 Oct 2016
- Grasshopper/Henslow's Sparrow Ammodramus savannarum/Centronyx henslowiiLast observed by Cynthia Bridge on 2 Oct 2012
- Lincoln's/Swamp Sparrow Melospiza lincolnii/georgianaLast observed by Brad Bumgardner NFC Station on 14 Apr 2024
- Spotted/Eastern Towhee (Rufous-sided Towhee) Pipilo maculatus/erythrophthalmusLast observed by Jessica Oosterhuis on 31 Jul 2023
- Bullock's/Baltimore Oriole Icterus bullockii/galbulaLast observed by Tonissa VerHaagh on 22 Jul 2018
- Rusty/Brewer's Blackbird Euphagus carolinus/cyanocephalusLast observed by Vicki Buchman on 13 Apr 2024
- Boat-tailed/Great-tailed Grackle Quiscalus major/mexicanusLast observed by WSORC Data on 17 Apr 1999
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Jeremy Nance on 19 Apr 2024
- Golden-winged/Blue-winged Warbler Vermivora chrysoptera/cyanopteraLast observed by Bob Anderson on 24 Jun 2023
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Beth Phillips on 29 Sep 2023
- Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalusLast observed by Martin Stabb on 15 Mar 2021