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Maine
Illustrated Checklist
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Native and Naturalized (459)
Exotic: Provisional (1)
Exotic: Escapee (18)
Hybrids (27)
- Snow x Ross's Goose (hybrid) Anser caerulescens x rossiiLast observed by Shawn Morneault on 14 Oct 2017
- Swan Goose x Canada Goose (hybrid) Anser cygnoides x Branta canadensisLast observed by Bill Sheehan on 29 Sep 2013
- Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensisLast observed by Shawn Morneault on 21 Oct 2017
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Joanne Kessler on 6 Sep 2023
- Muscovy Duck x Mallard (hybrid) Cairina moschata x Anas platyrhynchosLast observed by R Miller on 27 Mar 2024
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Anonymous eBirder on 14 Apr 2024
- Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acutaLast observed by Ross Knowlton on 26 Mar 2024
- Northern Pintail x Green-winged Teal (hybrid) Anas acuta x creccaLast observed by Chris Bartlett on 12 Apr 2019
- Redhead x Ring-necked Duck (hybrid) Aythya americana x collarisLast observed by Fyn Kynd on 5 Apr 2019
- King x Common Eider (hybrid) Somateria spectabilis x mollissimaLast observed by andrew aldrich on 28 Jan 2020
- Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandicaLast observed by Jeff Cherry on 15 Mar 2024
- Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatusLast observed by Oskar Mattes on 28 Dec 2019
- Black-headed x Ring-billed Gull (hybrid) Chroicocephalus ridibundus x Larus delawarensisLast observed by Bill Bunn on 23 Sep 2023
- Herring x Great Black-backed Gull (hybrid) Larus argentatus x marinusLast observed by Doug Hitchcox on 4 Nov 2022
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Nathan Dubrow on 18 Feb 2018
- Herring x Lesser Black-backed Gull (hybrid) Larus argentatus x fuscusLast observed by Nathan Dubrow on 18 Aug 2021
- Tricolored Heron x Snowy Egret (hybrid) Egretta tricolor x thulaLast observed by Cindy Baisden on 9 Sep 2022
- Snowy x Little Egret (hybrid) Egretta thula x garzettaLast observed by Monique Albert on 18 May 2023
- Glossy x White-faced Ibis (hybrid) Plegadis falcinellus x chihiLast observed by Turk Duddy on 24 Apr 2020
- Red-shouldered x Red-tailed Hawk (hybrid) Buteo lineatus x jamaicensisLast observed by Alex Lamoreaux on 3 Jan 2024
- Pine Siskin x American Goldfinch (hybrid) Spinus pinus x tristisLast observed by Anne Brown on 4 Jun 2023
- Dark-eyed Junco x White-throated Sparrow (hybrid) Junco hyemalis x Zonotrichia albicollisLast observed by Thomas Magarian on 22 Apr 2011
- Nelson's x Saltmarsh Sparrow (hybrid) Ammospiza nelsoni x caudacutaLast observed by Scott Olmstead on 7 Jun 2023
- Golden-winged x Blue-winged Warbler (hybrid) Vermivora chrysoptera x cyanopteraLast observed by Donald Thompson on 20 May 2022
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Jeremiah Trimble on 22 May 2023
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by Heather Rutledge on 21 May 2023
Additional Taxa (185)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Jeff Cherry on 16 Apr 2024
- dabbling duck sp. Anatidae sp. (dabbling duck sp.)Last observed by Courtney Kelly Jett on 22 Dec 2023
- Velvet/White-winged/Stejneger's Scoter Melanitta fusca/deglandi/stejnegeriLast observed by Brenda Moulton on 22 Feb 2020
- Surf/Black Scoter Melanitta perspicillata/americanaLast observed by Lewis Wheelwright on 16 Apr 2024
- Ruffed/Spruce Grouse Bonasa umbellus/Canachites canadensisLast observed by Oscar Nigam on 1 Oct 2022
- Ring-necked/Green Pheasant Phasianus colchicus/versicolorLast observed by Sandy & Bob Sipe on 21 Sep 2022
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by Thomas Piuze on 15 Jun 2023
- Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandriLast observed by Christopher Hinkle on 30 May 2022
- American/Black Oystercatcher Haematopus palliatus/bachmaniLast observed by William Townsend on 13 May 2022
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by David Chernack on 13 Oct 2023
- Common/Spotted Sandpiper Actitis hypoleucos/maculariusLast observed by Scott Sutcliffe on 20 Oct 2013
- large shorebird sp. Scolopacidae sp. (large shorebird sp.)Last observed by Benjamin Becker on 18 Jun 2023
- Long-tailed/Parasitic Jaeger Stercorarius longicaudus/parasiticusLast observed by Cole Winstanley on 3 Oct 2020
- Long-tailed/Pomarine Jaeger Stercorarius longicaudus/pomarinusLast observed by Keenan Yakola on 19 Aug 2017
- Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinusLast observed by Jeff Cherry on 20 Nov 2022
- Laughing/Franklin's Gull Leucophaeus atricilla/pipixcanLast observed by Alex Lamoreaux on 10 Jul 2023
- Herring/Lesser Black-backed Gull Larus argentatus/fuscusLast observed by Michele Adams on 17 Aug 2023
- storm-petrel sp. (white-rumped) Oceanitidae/Hydrobatidae sp. (white-rumped)Last observed by Weston Barker on 4 Jul 2023
- Cory's/Great Shearwater Calonectris diomedea/Ardenna gravisLast observed by Luke Seitz on 15 Aug 2022
- black-and-white shearwater sp. Puffinus sp. (black-and-white shearwater sp.)Last observed by Michael Schrimpf on 12 Jul 2012
- Great/Double-crested Cormorant Phalacrocorax carbo/Nannopterum auritumLast observed by Willy Hutcheson on 14 Apr 2024
- Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violaceaLast observed by Mike Fahay on 30 Aug 2021
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Myles Quirion on 17 Apr 2024
- Cooper's Hawk/American Goshawk Accipiter cooperii/atricapillusLast observed by Weston Barker on 31 Mar 2021
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalusLast observed by Trish Berube on 17 Mar 2021
- Red-shouldered/Broad-winged Hawk Buteo lineatus/platypterusLast observed by Bill Sheehan on 20 May 2022
- small falcon sp. Falco sp. (small falcon sp.)Last observed by Antioch University Bird Records on 18 Mar 2024
- diurnal raptor sp. Accipitriformes/Falconiformes sp.Last observed by Scott Richardson on 29 Feb 2024
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by John Lorenc on 8 Oct 2023
- yellow-bellied kingbird sp. Tyrannus sp. (yellow-bellied)Last observed by Luke Seitz on 21 Nov 2016
- Philadelphia/Red-eyed Vireo Vireo philadelphicus/olivaceusLast observed by Levi Metzger on 28 Jul 2023
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaLast observed by Luke Seitz on 1 Oct 2021
- Gray-cheeked/Bicknell's Thrush Catharus minimus/bicknelliLast observed by Weston Barker on 13 Oct 2023
- Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.Last observed by Diane Losier on 17 Apr 2019
- Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow) Ammospiza nelsoni/caudacutaLast observed by Brian Harris on 8 Oct 2023
- Shiny/Brown-headed Cowbird Molothrus bonariensis/aterLast observed by Thomas Magarian on 19 Nov 2010
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by tom aversa on 30 Jul 2022
- Golden-winged/Blue-winged Warbler Vermivora chrysoptera/cyanopteraLast observed by Luke Seitz on 23 May 2018
- MacGillivray's/Mourning Warbler Geothlypis tolmiei/philadelphiaLast observed by Bill Thompson on 19 Sep 2023
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Roberto Macay on 6 Oct 2023