Shag (Phalacrocorax Aristotelis) Bird Information Shag is a smaller version of Cormorant, though essentially marine along predominantly rocky coasts. Shag bird swims, dives and hangs out wings like Cormorant but seldom flies very high. Adult glossy green-black, with short tufted crest in summer. Bill black with yellow gape. Immature brownish with black scaling to feathers; … Continue reading Shag