The greater roadrunner is about 52–62 cm (20–24 in) long, the wingspan is about 43-61 cm (17-24 in) long, and weighs about 221-538 grams. It is about 25-30 cm tall, and is the largest North American cuckoo. It has a long, thick bill, a long dark tail, it has a dark head, and the front of its neck and belly is blue. It has zygodactyl feet, meaning that on each foot there is two toes on the front and two on the back.