A hawk's lifespan depends on the species, as there are many different types. The most commonly seen hawk, the red-tailed hawk, has a lifespan ranging from 13 to 21 years.
Red-tailed hawks are monogamous and usually mate for life. To find a mate, male red-tailed hawks perform complicated aerobatic displays, such as soaring high in the sky in pairs and diving extremely fast. They also grab each others' talons and dive together. When they have chosen a mate, they build a nest high in the tops of the trees and lay between one and five eggs. The male and female hawks take turns incubating them.