Wildlife of New Jersey: Common Mammals, Birds, Reptiles & Fish of the Garden State

Despite being the most densely populated U.S. state, New Jersey hosts surprising wildlife diversity across its Pine Barrens, coastal marshes, Highlands ridges, and suburban greenways. Here are the species you're most likely to encounter.

Mammals

• White-tailed deer – ubiquitous, sometimes overabundant
• Black bear – expanding range in northwest; ~3,000 statewide
• Red & gray fox – adaptable; red more common in suburbs
• Raccoon – thrives in urban/wildland interface
• Gray squirrel – the classic backyard acrobat
• Southern flying squirrel – nocturnal, common but rarely seen
• Voles & mice – meadow vole, white-footed mouse: prey base for predators

Birds (Resident & Seasonal)

• American goldfinch (state bird), American robin, Northern cardinal, Blue jay, Mourning dove – feeder regulars
• Bald eagle – remarkable recovery; nests in every county
• Red-tailed hawk, Great horned owl – top avian predators
• Eastern bluebird, Northern mockingbird – open habitat specialists

Reptiles & Amphibians

• Eastern box turtle – terrestrial, declining; species of concern
• Eastern garter snake – harmless, common
• Northern copperhead – only venomous snake in north NJ; shy
• American toad, Spring peeper – chorus frogs
• Salamanders: Jefferson, Northern red – forest vernal pool breeders
• Eastern newt – red eft stage on land, aquatic adult

Fish (Coastal & Freshwater)

• Saltwater: Striped bass, Bluefish, Fluke (summer flounder), Winter flounder, Weakfish
• Offshore: Cod, Haddock, Pollock, Halibut, Mahi-mahi (seasonal)
• Freshwater: Largemouth bass, Chain pickerel, Stocked trout, Sunfish

Conservation note: NJ's Endangered and Nongame Species Program protects 80+ listed species. Habitat fragmentation is the primary threat; wildlife corridors and the Pinelands Preserve are critical refuges.