Coluber constrictor priapus
Average size: 20-56 inches; Record 72 inches.
Range: Throughout most of Florida.
Diet: Lizards, snakes, frogs, insects, rodents and small birds.
Note that the Southern Black Racer has a white chin. An Indigo Snake normally has a dark to reddish orange chin.
The first photo is an immature Southern Black Racer. The next photo is an adult. The photo at bottom is a Brown Chinned Racer, Coluber constrictor helvigularis, found in the Apalachicola National Forest region.