Scientific Name: Crotalus atrox

Temporal Activity: Nocturnal at night during warm months, diurnal during spring and fall, and hibernates in rocky cliffs during winter.

Diet: Mainly rodents, but also birds, lizards, and small animals.

Predators:  Preyed upon by hawks, owls, coyoyes, and ringtails.

Breeding: Mating takes place in spring, up to 23 live young are born in late summer.

Vegetation Association: Has an association with mesquite-tarbush.

Photo: Taken at Brown's Ranch on April 10, 2004.