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 head is usually darker than the female’s. Robins in the eastern part ...

Adult: gray and yellow areas of underparts fairly bright, with abrupt gray-yellow contrast on breast. Outer pairs of tail feathers extensively rufous on inner webs; dark shaft stripes and rufous ...

finishing somewhere towards the rear of the bird's head), some dark bars and pale spots on short wings. They have a fairly long, thin, downcurved beak and long, thin yellow-brown legs. In flight ...

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 ...