yellow beak and brown body — as the national bird. The bald eagle has appeared on the Great Seal of the United States, which is used in official documents, since 1782, when the design was finalized.

Its calls are usually loud and often provide the best evidence to the presence of the bird ... yellow-billed cuckoo has a slender body, a long tail, and rounded wings. Adults have grayish brown ...

Both the male and female American robin are gray-brown birds with yellow bills and reddish-orange breasts, but the male’s ...

and flanks grayish brown. Bill dusky above, pale below. Adult: yellow patch tops black crown; less distinct in winter. Immature: less-distinct yellow patch on brown crown. Juvenile: dark streaks ...

The small brown bird weighs around 16 grams (roughly half an ounce) and has black and yellow bands along with a large beak. The finding, which was reported in the science journal Nature ...