New York Natural Heritage Program
Timber Rattlesnake
Crotalus horridus Linnaeus, 1758
Reptiles

New York State Distribution [-]
Although widespread in the state as a whole, timber rattlesnakes are now found in isolated or semi-isolated populations in southeastern New York, the southern tier, and the peripheral eastern Adirondacks. Populations were once found on Long Island and in most mountainous and hilly areas of the state, except for the higher elevations of the Adirondacks, Catskills, and the Tug Hill Plateau.

Global Distribution [-]
The timber rattlesnake ranges from central New England south to northern Florida and west to eastern Texas, central Oklahoma, eastern Kansas, southeastern Nebraska, southern and eastern Iowa, and southeastern Minnesota. The distribution is spotty along the western and northern edges of the range. Sizeable populations still occur in the Appalachian Mountains from Pennsylvania though the Virginias, across eastern Kentucky and Tennessee to northeastern Alabama, in the Ouachita and Boston mountains of Arkansas and extreme eastern Oklahoma, in heavily wooded sections of the southeastern Coastal Plain from North Carolina to northeastern Florida and west to Louisiana and southern Arkansas, and in the Piedmont in the Uwharrie National Forest of central North Carolina and Pine Mountain of west-central Georgia (Martin, in Tyning 1992). The overwintering dens occur at elevations of up to about 5,000 feet in the southern Appalachians, 2,200 feet in southern New England, and about 1,300 feet in northeastern New York, Wisconsin, and Minnesota and individuals may range to higher elevations during the summer (Martin, in Tyning 1992).
Best Places to See
• As this species is vulnerable to illegal collection, no naturally occurring populations are listed.
• Timber rattlesnakes are currently on display at the Bear Mountain Trailside Museum in Bear Mountain, New York (http://nysparks. (Rockland County)