See the big difference in the skin on these 2 Black Vultures (Coragyps atratus)? Juvenile black vultures often retain short, dark bristle-like feathers on their heads, giving them that scruffy punk look. As they mature, these feathers are lost, revealing the adult’s classic bald, wrinkled skin, a hygienic adaptation that makes their head easier to keep clean after feeding on carrion, reducing the risk of bacteria buildup.
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