<human>:  Why does the Galápagos mockingbird have a crest?
<bot>: The Galápagos mockingbird is a species of mockingbird that lives on the Galápagos Islands. It has a crest on its head that is used to attract mates. The crest is made of feathers that are colored to match the bird’s body. The crest is used to attract mates and to defend against predators.