Main threats include pesticide use, which threatens the insect-eating young, and habitat loss.Racers are abundant in most places, although they are rare in Maine, Louisiana, and the Canadian province of Ontario and are given legal protection in those areas.If a predator manages to come really close, the racer will smear secretions from its scent glands all over its body.Despite its name, racers usually move at a speed of only 4 miles per hour.
Store wood at least 18 inches above the ground and 12 inches away from walls. They lay 3-32 white oval eggs that will hatch in August or early September. Remove any fallen citrus from the ground.
Sometime between June and early July, females search for a suitable nest site, which can include a rotted stump or log, old mammal burrow, or a nest cavity in leaf litter or sand. As they grow, they can eat larger animals, including nestling birds and their eggs, squirrels, small rabbits, small turtles, and larger snakes. Young racers start out eating small animals, mostly insects, spiders, small frogs, small reptiles, and young rodents. They have also been seen in wetter areas like marshes, bogs, and lake edges. However, no Ontario snakes were actually sampled. Racers are most often found in dry sunny areas with cover, including open woodland, open fields, hedgerows, thickets, and wood edges. (2008) studied the phylogeography of Coluber constrictor using the mtDNA cytochrome b gene, and mapped Ontario racers as belonging to a central clade which has a much larger range than is traditionally attributed to subspecies foxii. The western yellow-bellied racer (Coluber constrictor mormon) is a subspecies that can be found in eastern Washington as well as California, Nevada, western Colorado, Oregon, and southern British Columbia. There are many subspecies of racers, each of which have very different ranges. Racers can be found from southern Canada to Guatemala.
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