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Greater roadrunner (Geococcyx californianus)

A ground-dwelling member of the cuckoo family native to the southwestern United States and Mexico; notable for running speed, long tail, and varied predatory diet.

The greater roadrunner (Geococcyx californianus) is a distinctive bird of arid and semi-arid regions in the southwestern United States and much of Mexico. A member of the cuckoo family (Cuculidae), it is commonly called the "ground cuckoo" and sometimes the "snake killer" because of its ability to prey on reptiles. The species is one of two commonly recognized roadrunners; the other is the lesser roadrunner.

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Appearance and anatomy

Greater roadrunners have a long tail, strong legs and a crest of feathers on the head. Their plumage is mottled brown and white, providing camouflage in scrub and desert habitats. Like other cuckoos, they have zygodactyl feet (two toes forward, two back), which aid in grasping prey and perching. Adults are long-bodied with a tail that often appears held horizontally and used for balance while running.

Behavior and diet

They are primarily terrestrial and are better known for running than for sustained flight; they can sprint quickly across open ground to pursue prey or escape predators. Their diet is opportunistic and varied: insects, spiders, scorpions, lizards, snakes, small mammals, nestling birds and eggs, and occasionally fruits and seeds. Roadrunners use a mix of stalking, quick pursuit and pecking to capture food.

Reproduction and lifecycle

Breeding pairs construct nests in low trees, shrubs or cacti. Both parents typically take part in building the nest, incubating the eggs and feeding chicks. Clutch sizes and timing vary with local conditions. Young are tended until capable of foraging independently but may remain associated with parents for some time.

Habitat, range and status

Preferred habitats include desert scrub, sagebrush, chaparral and open woodland. The greater roadrunner's range extends across the American Southwest into much of Mexico. It is adaptable to varied dry landscapes and is not presently considered threatened in most of its range; populations are generally stable.

Human connections and distinctions

The greater roadrunner appears in Southwestern folklore and popular culture and is sometimes colloquially celebrated for its bold hunting of snakes. It should not be confused with the smaller, more southerly roadrunner species that occupies different parts of Central and South America. Notable facts include their sunning behavior used for thermoregulation and the use of fast running as their primary locomotion.

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AlegsaOnline.com Greater roadrunner (Geococcyx californianus)

URL: https://en.alegsaonline.com/art/40601

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