What is a bird with black body, white head and big mouth?

The bald eagle (Latin name: Haliaeetus ieucocephalus), also known as the American eagle, is a large raptor. Adult sea eagles can reach 1 m in length and have a wingspan of more than 2 meters. The eyes, mouth and feet are light yellow, the feathers on the head, neck and tail are white, and the feathers on other parts of the body are dark brown, which is very magnificent. It mainly lives near the coast, lakes and rivers, feeds on large fish such as salmon and trout, waterfowl such as wild ducks and seagulls, and small mammals living by the water, and has strong flying ability. The upper beak has an arc-shaped vertical protrusion, which is suitable for tearing prey and swallowing; The base has wax film or whisker feathers; Strong wings, wide and blunt wings, flapping wings to soar, flapping wings slower than Falconidae; Most tarsometatarsal bones are relatively long, about equal to the length of gaskin, which is endemic to North America.