2The underside of a bird’s wing.
- 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.
- 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.
- 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.
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