The image above shows well the differences between mature and juvenile Black-faced Cormorants. Youngsters are brown and smaller. The white plumes on the back of the adult bird's neck are apparently a part of the breeding outfit. For a long time I thought that they appeared, just like in humans, with aging.
Black-faced Cormorants, Tasmaniaclick on a photo to view hi-res image :: click on a label to open all related posts
