Species of Connecticut

Includes rare, incidental, and introduced species.

Information and species will be continuously updated.

All 629

Blue Grosbeak ¹
Passerina caerulea

Lazuli Bunting ²
Passerina amoena

Indigo Bunting ³
Passerina cyanea

Painted Bunting ³
Passerina ciris

Dickcissel ⁴
Spiza americana

Bobolink ⁵
Dolichonyx oryzivorus

Red-winged Blackbird ⁶
Agelaius phoeniceus

Eastern Meadowlark ⁷
Sturnella magna

Western Meadowlark
Sturnella neglecta

Yellow-headed Blackbird ⁸
Xanthocephalus xanthocephalus

Rusty Blackbird ⁹
Euphagus carolinus

Brewer’s Blackbird

Common Grackle ¹⁰
Quiscalus quiscula

Boat-tailed Grackle ¹¹
Quiscalus major

Brown-headed Cowbird ⁴
Molothrus ater

Orchard Oriole ¹²
Icterus spurius

Bullock’s Oriole

Baltimore Oriole ⁷
Icterus galbula

Brambling ¹³
Fringilla montifringilla

Pine Grosbeak ¹⁴
Pinicola enucleator

Purple Finch ¹⁵
Haemorhous purpureus

House Finch ¹⁶
Haemorhous mexicanus

Red Crossbill ¹³
Loxia curvirostra

White-winged Crossbill ¹⁷
Loxia leucoptera

Common Redpoll ¹³
Acanthis flammea

Hoary Redpoll ¹³
Acanthis hornemanni

Pine Siskin ¹⁸
Spinus pinus

American Goldfinch ¹⁹
Spinus tristis

Evening Grosbeak ²⁰
Coccothraustes vespertinus

House Sparrow ²¹
Passer domesticus

American Toad ²²
Anaxyrus americanus

American Bullfrog ²³
Lithobates catesbeianus

Fowler's Toad ²⁴
Anaxyrus fowleri

Gray Treefrog ²⁵
Hyla versicolor

Green Frog ²⁶
Lithobates clamitans

Spring Peeper ²⁷
Pseudacris crucifer

Northern Leopard Frog ²⁸
Lithobates pipiens

Pickerel Frog ²⁹
Lithobates palustris

Wood Frog ³⁰
Lithobates sylvaticus

Eastern Spadefoot ³¹
Scaphiopus holbrookii

Blue-spotted Salamander ³²
Ambystoma laterale

Marbled Salamander ²⁴
Ambystoma opacum

Jefferson Salamander ²⁷
Ambystoma jeffersonianum

Spotted Salamander ²⁷
Ambystoma maculatum

Four-toed Salamander ³³
Hemidactylium scutatum

Dusky Salamander ³⁴
Desmognathus fuscus

Spring Salamander ³⁵
Gyrinophilus porphyriticus

Northern Two-lined Salamander ³⁴
Eurycea bislineata

Eastern Red-backed Salamander ³⁶
Plethodon cinereus

Eastern Newt ²⁹
Notophthalmus viridescens

Snapping Turtle ³⁷
Chelydra serpentina

Northern Slimy Salamander ³⁸
Plethodon glutinosus

Wood Turtle ³²
Glyptemys insculpta

Mudpuppy ³²
Necturus maculosus

Common Box Turtle ²²
Terrapene carolina

Bog Turtle ²⁷
Glyptemys muhlenbergii

Eastern Painted Turtle ³⁹
Chrysemys picta

Northern Diamondback Terrapin ²⁷
Malaclemys terrapin

Spotted Turtle ²⁷
Clemmys guttata

Common Musk Turtle ⁴⁰
Sternotherus odoratus

Eastern Rat Snake ⁴¹
Pantherophis alleghaniensis

Common Garter Snake ⁴²
Thamnophis sirtalis

Eastern Hognose Snake ⁴³
Heterodon platirhinos

Milk Snake ⁴⁴
Lampropeltis triangulum

Ribbon Snake ⁴⁵
Thamnophis sauritus

Racer ⁴⁶
Coluber constrictor

Brown Snake ⁴⁷
Storeria dekayi

Redbelly Snake ²⁷
Storeria occipitomaculata

Ringneck Snake ⁴⁸
Diadophis punctatus

Northern Watersnake ⁴⁹
Nerodia sipedon

Smooth Greensnake ⁵⁰
Opheodrys vernalis

Copperhead ⁴
Agkistrodon contortrix

Timber Rattlesnake ⁵¹
Crotalus horridus

Common Five-lined Skink ⁵²
Plestiodon fasciatus

Maidenhair Fern ³⁴
Adiantum pedatum

walking fern ⁵³
Asplenium rhizophyllum

mountain spleenwort ³⁴
Asplenium montanum

wall-rue ⁵⁴
Asplenium ruta-muraria

Virginia chain fern ⁵⁵
Woodwardia virginica

narrow-leaved glade fern ⁵⁶
Homalosorus pycnocarpos

maidenhair spleenwort ⁵⁷
Asplenium trichomanes

Lady Fern ⁵⁸
Athyrium filix-femina

cut-leaved grape-fern ⁵⁹
Botrychium dissectum

adder's-tongue ⁶⁰
Ophioglossum vulgatum

Christmas Fern ²³
Polystichum acrostichoides

sensitive fern ⁶¹
Onoclea sensibilis

rusty woodsia ⁶²
Woodsia ilvensis

blunt woodsia
Woodsia obtusa

Hartford fern
Lygodium palmatum

lance-leaved moonwort ⁶³
Botrychium lanceolatum

chamomile-leaved moonwort ⁶⁴
Botrychium matricariifolium

blunt-lobed grapefern ⁶⁵
Botrychium oneidense

Rattlesnake Fern ⁶⁴
Botrypus virginianus

northern adder's-tongue ⁶²
Ophioglossum pusillum

cinnamon fern ⁶⁶
Osmundastrum cinnamomeum

Interrupted Fern ⁶⁷
Osmunda claytoniana

Royal Fern ⁶⁸
Osmunda regalis

Appalachian rockcap fern ⁶⁹
Polypodium appalachianum

long beech fern ⁷⁰
Phegopteris connectilis

Rock Polypody ⁷¹
Polypodium virginianum

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