The juvenile pattern of young racers fades to black when the snakes are about 12 in long. The southern black racer is a subspecies of the Coluber constrictor that can be found throughout much of the southeastern United States. Adult Racers range from 50 cm to 2 m in length. ... Handbook of Snakes of the United States and Canada. These reptiles attain a medium length and have huge appetites. When disturbed, this snake may buzz or vibrate its tail. Range and Habitat: Black racers are found throughout the eastern U.S., from southern Maine to the Florida Keys. The southern black racer is found only in extreme southeast Oklahoma. Cornell University Press, 1957. Maine's lone endangered snake, the black racer or coluber constrictor, matures at up to 6 feet long. Its color variations include the Texas ratsnake. No subspecies are currently recognized. It is variable in appearance and can black or brown, and banded or striped. Other subspecies such as yellow-bellied racers are found in the Central U.S. and in scattered areas of the West. Other Information: The eastern yellow-bellied racer is found statewide except for extreme southeast Oklahoma. As slender and graceful snakes they both grow to around the same length -- about 4 feet -- though some may grow as long as 6 to 8 feet. Diet: Mostly eat rodents, lizards, birds and bird eggs. One of the telling characteristics of this subspecies of snake is that they are very active during daytime. Scientific name: Coluber constrictor mormon PDF version of this page Western Yellow-bellied Racers are long, slender snakes with large, smooth scutes (scales). And can they fly. It is active day and night. Racer eggs have a rough, granular texture. There are many black and yellow striped snake in North America. Coral snakes (Micrurus fulvius) are venomous snakes with black, yellow, and red coloring. Black racer snakes out glosses its duller cousin, the black rat snake, whose skin offers up a dull, ridged appearance. Maine's lone endangered snake, the black racer or coluber constrictor, matures at up to 6 feet long. The physical appearance of a black racer includes having a black dorsal side, a grey belly and a white him. The southern black racer is found only in extreme southeast Oklahoma. When disturbed, this snake may buzz or vibrate its tail. (DepositPhotos) Facts About Black Snakes. A blue-green topped Racer has caught and is eating a Plains Garter Snake. The top can be blue, green, olive-drab to almost black. It was wise to call this fellow Yellow-Bellied Racer because the belly is a consistent yellow. Pantherophis obsoletus – also known as the western rat snake, black rat snake, pilot black snake, or simply black snake – is a non-venomous species of Colubridae found in central North America.