The Galapagos hawk is threatened due to human intervention, including disturbance of habitat and hunting. Competition with introduced species like feral cats also contributes to the reduction in numbers. Another possible threat is the lack of genetic variety within the populations.
As an apex predator, the Galapagos hawk preys on a wide variety of animals, such as insects, rats and other birds. Young iguanas and sea turtle hatchlings also constitute a portion of its diet. Males are mostly monogamous, while females can have up to seven partners. Mating occurs a few times a day between pairs during the breeding season. Males also contribute to nesting and assist in feeding the young.