a white backside that can only be seen when the bird is in flight. Its wings, which are white on top and brown on the bottom, can reach a span of up to 7.5 feet. Its mostly bald head helps the ...

Prominent black crescent framing lower edge of auricular. On perched bird, wing patch shows only as a thin white line along the leading edge of the folded wing. Adult male: grayish or grayish ...