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The left upper image is of an adult in moult with part of the hood remaining (2-09). The right upper and middle images are of October (Winter) plumage. The left lower image is a 1 Cy bird in August. The left middle and right lower rollover images is are 1Cy birds in October. All images are courtesy of Dr. Louis A. hansen. The video is of a bird in breeding plumage. The audio recording was made in Japan.
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