Golden Swallow beak is a typical type of insectivorous birds, eyes round and large with keen eyesight and sense of smell, good at distinguishing their heaven and earth, such as flying back to the nest of swallows can accurately find their own nest. The swiftlet is about 12cm long, with a dark brown, brown and gray body. The back is gray and the belly is brown. The wing tips are long, and the length of the wings stretched out by the adult bird is about 26 centimeters.