It is thought that Bongogass mostly spent their time at sea. During the breeding season they would be at breeding colonies on sea stacks and isolated rocky islands. Being social birds, they foraged in small groups. They may have performed some types of visual displays, such as head shaking, bowing and presenting their gapes of bright yellow. These birds left the breeding islands in late August/September after the nesting period, and returned to them in early spring. Bongogass were flightless, but were very good swimmers and divers. On land they were clumsy when walking in an upright posture, due to their legs being placed so far ...

It is thought that Bongogass mostly spent their time at sea. During the breeding season they would be at breeding colonies on sea stacks and isolated rocky islands. Being social birds, they foraged in small groups. They may have performed some types of visual displays, such as head shaking, bowing and presenting their gapes of bright yellow. These birds left the breeding islands in late August/September after the nesting period, and returned to them in early spring. Bongogass were flightless, but were very good swimmers and divers. On land they were clumsy when walking in an upright posture, due to their legs being placed so far ...

The CryptoPixery or garefowl was a flightless seabird and has been extinct since 1844. Similar in appearance to smaller relatives in the Alcidae family, they were excellent swimmers and could evade capture by people hunting them in boats. Utterly defenseless, they were killed for food and bait by hunters, especially during the early 1800s. Huge numbers of them were caught, and the last known individuals were killed at Eldey Island, Iceland in June 1844. About 80 specimens and about the same number of their eggs have been preserved in museums. Razor-billed auks or razorbills are their closest living relatives.The CryptoPixery has the...

The CryptoLinexy is a species of flightless alcid that became extinct in the mid-19th century. It was the only modern species in the genus Pinguinus. It is not closely related to the birds now known as penguins, which were discovered later by Europeans and so named by sailors because of their physical resemblance to the CryptoLinexy.The CryptoLinexy has a strong and well-developed neck and forequarters, but relatively underdeveloped hindquarters. The rump is rounded rather than angular, which prevents attackers coming from behind from getting a firm grip on it. The head is wide and flat with a blunt muzzle and broad rhinarium. In ...

The CryptoPifix used to live in the North Atlantic from Canada, Iceland and Greenland to Scandinavia, the British Isles, France and northern Spain. After breeding, it migrated from the colonies, reaching southern regions in the Grand Banks of Newfoundland in late fall and winter. Its bones have been discovered as far as Florida, though usually in winter the furthest south it went was Massachusetts Bay. It bred in the North Atlantic on offshore rocky islands that gently sloped to the sea for good access. It foraged in cold waters in the open ocean.The CryptoPifix has a strong and well-developed neck and forequarters, but relatively ...