The Galápagos hawk (Buteo galapagoensis) is the only diurnal raptor in the islands and can be found on nine islands across the archipelago. It appears that the hawk was a recent arrival to Galápagos, with genetic evidence suggesting that it colonized the islands within the last 300,000 years (Bollmer et al. 2006).
This species has a fascinating breeding system, exhibiting an extreme form of 'cooperative polyandry', where unrelated males in a territory share matings with a single female and all males provide parental care to the offspring (DeLay et al. 1996). In most polyandrous systems, males will display aggressive behaviours to other males and prevent mating attempts, however it does not seem that this is the case with the Galápagos Hawk.