Which species is not a member of the Falcon family?

The Cooper's hawk is not a member of the Falcon family; it belongs to the Accipitridae family, which includes various birds of prey such as hawks, eagles, and kites. In contrast, the other species listed—Peregrine falcon, Gyrfalcon, and Merlin—are all true falcons that belong to the Falconidae family. Falcons are characterized by certain traits such as their streamlined bodies and long wings, which enable them to be fast and agile hunters. Recognizing the family classifications of birds is crucial for understanding their behaviors, ecological roles, and the requirements for their care in falconry practices.