The Greater Scaup, also known as the Aythya marila, is a diving duck commonly found in North America. This bird has dark plumage and is characterized by a white patch on its head. It is an important game bird, hunted for its meat and feathers. Other synonyms for the Greater Scaup include "Bluebill," "Broadbill," and "Big Blackhead." These names describe the bird's physical characteristics, with "Big Blackhead" referring to the duck's distinctive dark head and "Bluebill" and "Broadbill" referencing the duck's wide, spoon-shaped beak. The Greater Scaup is an important part of the ecosystem in North America and is fascinating to observe in its natural habitat.