After doing some research, the pygmy rattler has numerous common names such as Michigan rattler, Massasauga, black massasauga, black rattler, black snapper, gray rattlesnake, little gray rattlesnake (Canada), muck rattler, prairie rattlesnake, pygmy rattler, sauger, spotted rattler, swamp rattler, víbora de cascabel (Mexico), dwarf prairie rattlesnake, eastern massasauga, great adder, ground rattlesnake, Kirtland's rattlesnake, little black rattlesnake, massasauga rattlesnake, massasauger, prairie massasauga, rattlesnake, small prairie rattlesnake, snapper, swamp massasauga, swamp rattlesnake, triple-spotted rattlesnake, and mississauga.
Geographically, the pygmy rattler in North America ranges from southwestern Ontario (Canada) and western New York State, southwest to southeastern Arizona (USA) and northern Tamaulipas (Mexico) and coastal California.
Further research may find that the snake, although classified as a pygmy, has differing characteristics and habits depending on its geographic location.
For instance, the Catalina Island variety (a part of the Channel Islands) is a tree climber and preys on birds, bird eggs, as well as rodents. Its also found without the typical tail rattle.
The attached map shows limited territory...