English: Chaparral cock; Greater roadrunner; Grote ren koekoek.
Roadrunner species generally have a size of about 50 cm from tail to beak. The roadrunner is a large, slender, black-brown and white streaked ground bird with a distinctive head crest. It has long legs, strong feet, and an oversized dark bill. The tail is broad with white tips on the three outer tail feathers. The bird is terrestrial; although capable of flight, it spends most of its time on the ground. Roadrunners can run at speeds of up to 30 km and generally prefer sprinting to flying. Roadrunners will fly to escape predators.