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The greater roadrunner is the biggest cuckoo bird running around in the American Southwest. There are plenty of these birds in Southern California and they are relatively brave in front of humans. I have seen these predators run around on roads and hop on backyard fences; one time while I was in Riverside I even saw one in a backyard eating a sparrow. They can run up to 32 kilometers per hour, more than the 24 kph I credit them with in the narration, and jump to catch flying prey. Coyotes can run to up 69 kph, and roadrunner bones have been found in their feces, so in this case life does not imitate art. It is true that coyotes are less maneuverable and cannot fly or fit into small spaces that roadrunners might be able to go into, but coyotes are much faster, can hunt in packs, and can match the jumping ability of the roadrunner.
True to their cuckoo form, the first to hatch within a clutch of 3-6 greater roadrunner eggs have a first-mover advantage and will hog up all the food and cause the younger siblings to starve if there is not enough food; sometimes the younger siblings will be fed directly to the older ones to ensure the survival of the older chicks.