(1) Many have paler underparts than upperparts and barred underwing and tail feathers, a patterning that may make them less visible to prey.(2) White underwing linings and some white at the wrist above are visible when the bird flies.(3) In flight, the long, wedge-shaped tail and prominent white trailing edge of the wing are evident; the underwing usually appears darker than the upperwing.(4) The underwing is white with a narrow band of gray.(5) They are mottled brown with cinnamon underwings that are distinctive in flight.(6) All plumages of Red-tailed Hawks have a darkish band on the leading edges of the inner underwings , known as the ‘patagial’ markings.(7) It is mottled brown overall, with cinnamon underwings .(8) The butterflies have tiger striped underwings and little black tails on their back wings.(9) Their underwings are a dusky grayish to brownish-white.(10) The body coloration is typical of gull plumage from above, but both breeding and non-breeding adults have dark underwings with pale wingtips, which are distinctive in flight.(11) Dark-morph birds are very dark brown above and below, with lighter underwings .(12) And each performance ends in a final swoop and a flicker of white underwings at the moment of alighting.(13) The underwings are white with a band of blue-gray.(14) But if you chance to see a vulture up close, you will notice that this iridescent black bird's underwings are a satiny gray.(15) They note that white plumage seen on the bird's back doesn't match the pattern of a pileated woodpecker, nor does the absence of black trailing edges on the underwings of the bird in the video.(16) The underwings are two-toned: silvery flight feathers with black wing-linings.
