Connecticut Wildlife

Connecticut is a rich mix of habitats filled with hundreds of fascinating animals. How many of these creatures have you encountered? Visit our Great Hikes page and bring your binoculars. We live in an amazingly beautiful state!

Great Hikes
 

Species Viability Code
 

I=Introduced

E=Range/species expanding

F=Feral

D=Declining/threatened

Amphibians & Reptiles

 

 

Blue-spotted Salamander

Ambystoma laterale

 

Bullfrog

Rana catesbeiana

 

Eastern American Toad

Bufo americanus americanus

D

Eastern Spadefoot

Scaphiopus holbrookii

 

Four-toed Salamander

Hemidactylium scutatum

 

Fowler's Toad

Bufo woodhousii fowleri

 

Gray Treefrog

Hyla versicolor

 

Green Frog

Rana clamitans melanota

 

Jefferson Salamander

Ambystoma jeffersonianum

 

Marbled Salamander

Ambystoma opacum

 

Mudpuppy

Necturus maculosus maculosus

 

Northern Dusky Salamander

Desmognathus fuscus fuscus

 

Northern Leopard Frog

Rana pipiens

 

Northern Spring Peeper

Hyla crucifer crucifer

D

Northern Slimy Salamander

Plethodon glutinosus

D

Northern Spring Salamander

Gyrinophilus porphyriticus

 

Northern Two-Lined Salamander

Eurycea bislineata bislineata

 

Pickerel Frog

Rana palustris

 

Redback Salamander

Plethodon cinereus

 

Red-spotted Newt

Notophthalmus viridescens viridescens

 

Spotted Salamander

Ambystoma maculatum

 

Wood Frog

Rana sylvatica

 

Black Rat Snake

Elaphe obsoleta obsoleta

D

Bog Turtle

Clemmys muhlenbergii

 

Common Snapping Turtle

Chelydra serpentina serpentina

 

Eastern Garter Snake

Thamnophis sirtalis sirtalis

 

Eastern Hognose Snake

Heterodon platyrhinos

 

Eastern Milk Snake

Lampropeltis triangulum triangulum

 

Eastern Painted Turtle

Chrysemys picta picta

 

Eastern Ribbon Snake

Thamnophis sauritus

 

Eastern Smooth Green Snake

Opheodrys vernalis vernalis

 

Eastern Worm Snake

Carphophis amoenus amoenus

D

Five-lined Skink

Eumeces fasciatus

 

Midland Painted Turtle

Chrysemys picta marginata

 

Northern Brown Snake

Storeria dekayi dekayi

 

Northern Copperhead

Agkistrodon contortrix mokeson

 

Northern Black Racer

Coluber constrictor constrictor

 

Northern Redbelly Snake

Storeria occipitomaculata occipitomaculata

 

Northern Ringneck Snake

Diadophis punctatus edwardsi

 

Northern Water Snake

Nerodia sipedon sipedon

 

Red-eared Slider

Pseudemys scripta elegans

 

Spotted Turtle

Clemmys guttata

 

Stinkpot

Sternotherus odoratus

D

Timber Rattlesnake

Crotalus horridus

 

Wood Turtle

Clemmys insculpta

 

Reptiles

D

Loggerhead Turtle

Caretta caretta

D

Atlantic Green Turtle

Chelonia mydas

D

Leatherback Turtle

Dermochelys coriacea

D

Atlantic Ridley Turtle

Lepidochelys kempii

 

Birds

 

                        

E

Acadian Flycatcher

Empidonax virescens

 

Alder Flycatcher

Empidonax alnorum

D

American Black Duck

Anas rubripes

D

American Bittern

Botaurus lentiginosus

D

American Coot

Fulica americana

E

American Crow

Corvus brachyrhynchos

 

American Goldfinch

Carduelis tristis

 

American Kestrel

Falco sparverius

 

American Oystercatcher

Haematopus palliatus

 

American Pipit

Anthus rubescens

D

American Redstart

Setophaga ruticilla

 

American Robin

Turdus migratorius

D

American Tree Sparrow

Spizella arborea

E

American Wigeon

Anas americana

 

American Woodcock

Scolopax minor

D

Baird's Sandpiper

Calidris bairdii

 

Bald Eagle

Haliaeetus leucocephalus

D

Bank Swallow

Riparia riparia

D

Barn Owl

Tyto alba

 

Barn Swallow

Hirundo rustica

D

Barred Owl

Strix varia

 

Bay-breasted Warbler

Dendroica castanea

 

Belted Kingfisher

Ceryle alcyon

D

Black-backed Woodpecker

Picoides arcticus

 

Black-capped Chickadee

Parus atricapillus

D

Black-crowned Night?Heron

Nycticorax nycticorax

 

Black-bellied Plover

Pluvialis squatarola

D

Black-billed Cuckoo

Coccyzus erythropthalmus

D

Black-throated Blue Warbler

Dendroica caerulescens

D

Black-throated Green Warbler

Dendroica virens

 

Blackburnian Warbler

Dendroica fusca

 

Blackpoll Warbler

Dendroica striata

E

Black & White Warbler

Mniotilta varia

D

Black Rail

Laterallus jamaicensis

 

Black Scoter

Melanitta nigra

D

Black Tern

Chlidonias niger

E

Black Vulture

Coragyps atratus

E

Blue-gray Gnatcatcher

Polioptila caerulea

D

Blue-winged Teal

Anas discors

IE

Blue-winged Warbler

Vermivora pinus

 

Blue Grosbeak

Guiraca caerulea

 

Blue Jay

Cyanocitta cristata

 

Bobolink

Dolichonyx oryzivorus

 

Bonaparte's Gull

Larus philadelphia

 

Brant

Branta bernicla

E

Broad-winged Hawk

Buteo platypterus

 

Brown-headed Cowbird

Molothrus ater

 

Brown Creeper

Certhia americana

D

Brown Thrasher

Toxostoma rufum

 

Buff-breasted Sandpiper

Tryngites subruficollis

 

Bufflehead

Bucephala albeola

 

Canada Goose

Branta canadensis

 

Canada Warbler

Wilsonia canadensis

E

Canvasback

Aythya valisineria

 

Cape May Warbler

Dendroica tigrina

E

Carolina Wren

Thryothorus ludovicianus

D

Caspian Tern

Sterna caspia

IE

Cattle Egret

Bubulcus ibis

 

Cedar Waxwing

Bombycilla cedorum

 

Cerulean Warbler

Dendroica cerulea

 

Chestnut-sided Warbler

Dendroica pensylvanica

D

Chimney Swift

Chaetura pelagica

 

Chipping Sparrow

Spizella passerina

 

Chuck-will's widow

Caprimulgus carolinensis

D

Clapper Rail

Rallus longirostris

 

 

Clay-colored Sparrow

Spizella pallida

E

Cliff Swallow

Hirundo pyrrhonota

 

Common Eider

Somateria mollissima

 

Common Grackle

Quiscalus quiscula

 

Common Goldeneye

Bucephala clangula

D

Common Loon

Gavia immer

 

Common Merganser

Mergus merganser

D

Common Moorhen

Gallinula chloropus

D

Common Nighthawk

Chrodeiles minor

E

Common Raven

Corvus corax

 

Common Snipe

Gallinago gallinago

 

Common Tern

Sterna hirundo

 

Common Yellowthroat

Geothlypis trichas

D

Connecticut Warbler

Oporornis agilis

D

Cooper's Hawk

Accipiter cooperii

 

Dark-eyed Junco

Junco hyemalis

 

Dickcissel

Spiza americana

E

Double-crested Cormorant

Phalacrocorax auritus

 

Downy Woodpecker

Picoides pubescens

 

Dunlin

Calidris alpina

 

Eared Grebe

Podiceps nigricollis

D

Eastern Bluebird

Sialia sialis

 

Eastern Kingbird

Tyrannus tyrannus

D

Eastern Meadowlark

Sturnella magna

D

Eastern Phoebe

Sayornis phoebe

 

Eastern Screech Owl

Otus asio

D

Eastern Wood Pewee

Contopus virens

 

Eskimo Curlew

Numenius borealis

I

Eurasian Jackdaw

Corvus monedula

I

European Starling

Sturnus vulgaris

 

Evening Grosbeak

Coccothraustes vespertinus

D

Field Sparrow

Spizella pusilla

E

Fish Crow

Corvus ossifragus

E

Forster's Tern

Sterna forsteri

 

Fox Sparrow

Passerella iliaca

E

Gadwall

Anas strepera

 

Glaucous Gull

Larus hyperboreus

 

Glossy Ibis

Plegadis falcinellus

 

Golden-crowned Kinglet

Regulus satrapa

D

Golden-winged Warbler

Vermivora chrysoptera

D

Golden Eagle

Aquila chrysaetos

D

Grasshopper Sparrow

Ammodramus savannarum

D

Gray-cheeked Thrush

Catharus minimus

 

Gray Catbird

Dumetella carolinensis

E

Great Black-backed Gull

Larus marinus

E

Great Blue Heron

Ardea herodias

D

Great Crested Flycatcher

Myiarchus crinitus

 

Great Cormorant

Phalacrocorax carbo

 

Great Egret

Casmerodius albus

E

Great Horned Owl

Bubo virginianus

D

Greater Scaup

Aythya marila

 

Greater Yellowlegs

Tringa melanoleuca

 

Green-backed Heron

Butorides striatus

 

Green-winged Teal

Anas crecca

 

Hairy Woodpecker

Picoides villosus

D

Harlequin Duck

Histrionicus histrionicus

D

Hermit Thrush

Catharus guttatus

 

Herring Gull

Larus argentatus

 

Hooded Merganser

Lophodytes cucullatus

 

Hooded Warbler

Wilsonia citrina

E

Horned Grebe

Podiceps auritus

D

Horned Lark

Eremophila alpestris

IE

House Finch

Carpodacus mexicanus

ID

House Sparrow

Passer domesticus

D

House Wren

Troglodytes aedon

 

Hudsonian Godwit

Limosa haemastica

D

Indigo Bunting

Passerina cyanea

 

Ipswich Sparrow

Passerculus sandwichensis

 

Kentucky Warbler

Oporornis formosus

 

Killdeer

Charadrius vociferus

 

King Eider

Somateria spectabilis

D

King Rail

Rallus elegans

E

Lark Sparrow

Chondestes grammacus

 

Laughing Gull

Larus atricilla

D

Least Bittern

Ixobrychus exilis

D

Least Flycatcher

Empidonax minimus

 

Least Sandpiper

Calidris minutilla

D

Least Tern

Sterna antillarum

 

Lesser Black-backed Gull

Larus fuscus

 

Lesser Golden P Lover

Pluvialis dominica

D

Lesser Scaup

Aythya affinis

 

Lincoln's Sparrow

Melospiza lincolnii

E

Little Blue Heron

Egretta caerulea

E

Little Gull

Larus minutus

D

Loggerhead Shrike

Lanius ludovicianus

D

Long-eared Owl

Asio otus

 

Louisiana Waterthrush

Seiurus motacilla

 

Magnolia Warbler

Dendroica magnolia

IF

Mallard

Anas platyrhynchos

D

Marbled Godwit

Limoas fedoa

D

Marsh Wren

Cistothorus palustris

 

Merlin

Falco columbarius

IE

Monk Parakeet

Myiopsitta monachus

 

Mourning Dove

Zenaida macroura

 

Mourning Warbler

Oporornis philadelphia

IE

Mute Swan

Cygnus olor

D

Nashville Warbler

Vermivora ruficapilla

D

Northern Bobwhite

Colinus virginianus

 

Northern Cardinal

Cardinalis cardinalis

D

Northern Flicker

Colaptes auratus

E

Northern Gannet

Morus bassanus

E

Northern Goshawk

Accipiter gentilis

D

Northern Harrier

Circus cyaneus

E

Northern Mockingbird

Mimus polyglottos

E

Northern Oriole

Icterus galbula

D

Northern Parula

Parula americana

 

Northern Pintail

Anas acuta

E

Northern Rough-winged Swallow

Stelgidopteryx ruficollis

D

Northern Saw-whet Owl

Aegolius acadicus

 

Northern Shoveler

Anas clypeata

D

Northern Shrike

Lanius excubitor

 

Northern Waterthrush

Seiurus novebor acensis

D

Oldsquaw

Clangula hyemalis

 

Olive-sided Flycatcher

Contopus borealis

D

Orange-crowned Warbler

Vermivora celata

E

Orchard Oriole

Icterus spurius

E

Osprey

Pandion haliaetus

 

Ovenbird

Seiurus aurocapillus

 

Palm Warbler

Dendroica palm arum

 

Pectoral Sandpiper

Calidris melanotos

D

Peregrine Falcon

Falco peregrinus

 

Philadelphia Vireo

Vireo philadelphicus

DE

Pied-billed Grebe

Podilymbus podiceps

E

Pileated Woodpecker

Dryocopus pileatus

 

Pine Siskin

Carduelis pinus

D

Pine Warbler

Dendroica pinus

D

Piping Plover

Charadrius melodus

 

Prairie Warbler

Dendroica discolor

 

Prothonotary Warbler

Protonotaria citrea

 

Purple Finch

Carpodacus purpureus

D

Purple Gallinule

Porphyrula martinica

D

Purple Martin

Progne subis

 

Purple Sandpiper

Calidris maritima

E

Red-bellied Woodpecker

Malanerpes carolinus

 

Red-breasted Merganser

Mergus serrator

 

Red-breasted Nuthatch

Sitta canadensis

D

Red-eyed Vireo

Vireo olivaceus

D

Red-headed Woodpecker

Melanerpes erythrocephalus

 

Red-necked Grebe

Podiceps grisengena

D

Red-shouldered Hawk

Buteo lineatus

 

Red-winged Blackbird

Agelaius phoeniceus

 

Red-tailed Hawk

Buteo jamaicensis

 

Red-throated Loon

Gavia stellata

E

Red Knot

Calidris canutus

E

Ring-billed Gull

Larus delawarensis

 

Ring-necked Duck

Aythya collaris

ID

Ring-necked Pheasant

Phasianus colchicus

IF

Rock Dove

Columba livia

 

Rose-breasted Grosbeak

Pheucticus ludovicianus

D

Roseate Tern

Sterna dougallii

 

Rough-legged Hawk

Buteo lagopus

 

Royal Tern

Sterna maxima

E

Ruby-crowned Kinglet

Regulus calendula

D

Ruby-throated Hummingbird

Archilochus colubris

 

Ruddy Duck

Oxyura jamaicensis

 

Ruddy Turnstone

Arenaria interpres

 

Ruff

Philomachus pugnax

 

Ruffed Grouse

Bonasa umbellus

 

Rufous-sided Towhee

Pipilo erythrophthalmus

 

Sanderling

Calidris alba

D

Savannah Sparrow

Passerculus sandwichensis

 

Scarlet Tanager

Piranga olivacea

 

Seaside Sparrow

Ammodramus maritimus

D

Sedge Wren

Cistothorus platensis

 

Semipalmated Plover

Charadrius semipalm atus

 

Semipalmated Sandpiper

Calidris pusilla

D

Sharp-shinned Hawk

Accipiter striatus

D

Sharp-tailed Sparrow

Ammodramus caudacutus

 

Sharp-billed Dowitcher

Limnodromus griseus

D

Short-eared Owl

Asio flammeus

DE

Snowy Egret

Egretta thula

 

Snowy Owl

Nyctea scandiaca

 

Solitary Vireo

Vireo solitarius

 

Spotted Sandpiper

Actitus macularia

D

Stilt Sandpiper

Calidris himantopus

 

Surf Scoter

Melanitta perspicillata

 

Snow Bunting

Plectrophenax nivalis

 

Snow Goose

Chen caerulescens

 

Song Sparrow

Melospiza melodia

 

Sora

Parzana carolina

D

Summer Tanager

Piranga rubra

 

Swainson's Thrush

Catharus ustulatus

E

Swamp Sparrow

Melospiza georgiana

 

Tennessee Warbler

Vermivora peregrina

E

Tree Swallow

Tachycineta bicolor

 

Tri-colored Heron

Egretta tricolor

E

Tufted Titmouse

Parus bicolor

E

Turkey Vulture

Cathartes aura

D

Upland Sandpiper

Bartramia longicauda

D

Veery

Catharus fuscescens

D

Vesper Sparrow

Pooecetes gramineus

D

Virginia Rail

Rallus limicola

E

Warbling Vireo

Vireo gilvus

E

Western Kingbird

Tyrannus verticalis

 

Western Sandpiper

Calidris mauri

D

Whimbrel

Numenius phaeopus

D

Whip-poor-will

Caprimulgus vociferus

E

White-breasted Nuthatch

Sitta carolinensis

 

White-crowned Sparrow

Zonotrichia leucophrys

E

White-eyed Vireo

Vireo griseus

 

White-rumped Sandpiper

Calidris fuscicollis

 

White-throated Sparrow

Zonotrichia albicollis

D

White-winged Scoter

Melanitta fusca

E

Wild Turkey

Meleagris gallopavo

 

Willet

Catoptrophorus semipalmatus

E

Willow Flycatcher

Empidonax traillii

D

Wilson's Phalarope

Phalaropus tricolor

D

Wilson's Plover

Charadrius wilsonia

 

Wilson's Warbler

Wilsonia pusilla

E

Winter Wren

Troglodytes troglodytes

 

Wood Duck

Aix sponsa

E

Wood Thrush

Hylocichla mustelina

E

Worm-eating Warbler

Helmitheros vermivorus

 

Yellow-bellied Flycatcher

Empidonax flaviventris

D

Yellow-bellied Sapsucker

Sphyrapicus varius

D

Yellow-billed Cuckoo

Coccyzus americanus

D

Yellow-breasted Chat

Icteria virens

 

Yellow-crowned Night-Heron

Nyctanassa violacea

 

Yellow-rumped Warbler

Dendroica coronata

D

Yellow-throated Vireo

Vireo flavifrons

 

Yellow-throated Warbler

Dendroica dominica

D

Yellow Warbler

Dendroica petechia

 

 

 

 

Mammals

 

Beaver

Castor canadensis

 

Big Brown Bat

Eptesicus fuscus

E

Black Bear

Ursus americanus

 

Bobcat

Lynx rufus

E

Coyotes

Canis latrans

 

Deer Mouse

Peromyscus maniculatus

 

Eastern Cottontail

Sylvilagus floridanus

 

Eastern Chipmunk

Tamias striatus

 

Eastern Mole

Scalopus aquaticus aquaticus

 

Eastern Pipistrelle

Pipistrellus subflavus obscurus

 

Ermine

Mustela erminea cicognanii

I

European Hare

Lepus europaeus

 

Fisher

Martes pennanti pennanti

 

Gapper's Red-backed Mouse

Clethrionomys gapperi

 

Grey Fox

Urocyon cinereoargenteus

 

Grey Seal

Halichoerus grypus

 

Grey Squirrel

Sciurus carolinensis pennsylvanicus

 

Hairy-tailed Mole

Parascalops breweri

 

Harbor Porpoise

Phocoena phocoena

 

Hoary Bat

Lasiurus cinereus

I

House Mouse

Mus musculus

 

Keen's Myotis

Myotis keenii septentrionalis

D

Least Shrew

Cryptotis parva

 

Little Brown Myotis

Myotis lucifugus

 

Long-tailed Weasel

Mustela freneta

D

Lynx

Lynx canadensis

 

Marten

Martes americana americana

 

Masked Shrew

Sorex cinereus cinereus

 

Meadow Jumper

Zapus hudsonius

 

Meadow Vole

Microtus pennsylvanicus

 

Mink

Mustela vison

E

Moose

Alces alces americana

 

Muskrat

Ondatra zibethicus

D

New England Cottontail

Silvilagus transitionalis

 

Northern Flying Squirrel

Glaucomys sabrinus macrotis

I

Norway Rat

Rattus norvegicus

 

Pine Vole

Microtus pinetorum scalopsoides

 

Porcupine

Erethizon dorsatum dorsatum

 

Raccoon

Procyon lotor

 

Red Bat

Lasiurus borealis

 

Red Fox

Vulpes vulpes

 

Red Squirrel

Tamiasciurus hudsonicus

 

River Otter

Lutra canadensis

 

Short-tailed Shrew

Blarina brevicauda

 

Silver-haired Bat

Lasionycteris moctivagans

 

Small-footed Myotis

Myotis leibii leibii

 

Smoky Shrew

Sorex fumeus

 

Snowshoe Hare

Lepus americanus

 

Southern Bog Lemming

Synaptomys cooperi

 

Southern Flying Squirrel

Glaucomys volans

 

Star-nosed Mole

Condylura cristata

 

Thompson's Pygmy Shrew

Microsorex thompsoni thompsoni

 

Virginia Opossum

Didelphis virginiana

 

Water Shrew

Sorex palustris albibarbus

 

White-footed Mouse

Peromyscus leucopus

 

White-tailed Deer

Odocoileus virginianus borealis

 

Woodchucks

Marmota monax

 

Woodland Jumping Mouse

Napaeozapus insignis