Habitat and Biome
(Hover over the picture with your mouse to see descriptions)
ecosystem
Prey (Intraspecific)
They eat a variety of prey including frogs, lizards, mice, rats, moles, small snakes and even birds eggs.
The Black Racer Snake usually doesn't interact with other species except to eat them. But in rare occasions it will share a nest with other snakes in what is a peaceful relationship.
Predators (intraspecific)
Black Racer snakes are secondary consumers. their only predators are large mammals, predatory birds, and larger snakes. (2)
Interspecific Interactions
The Black Racer Snake only interacts with its own species for the purpose of mating. The male Black Racer Snakes occasionally fight over a female mate. The male mates with the female snake and then leaves after the female is pregnant. Both the male and the female look for another mate in a year. Also the females will on rare occasion nest together (let me reinforce snakes mating together is really rare).
Sources
(1) http://edis.ifas.ufl.edu/uw251
(2) http://srelherp.uga.edu/snakes/colcon.htm
(2) http://srelherp.uga.edu/snakes/colcon.htm