As bird feathers go, those of the cormorant are unusual in that they allow moisture to penetrate. This makes cormorants heavier in water, allowing them to overcome some buoyancy and dive deeper. However, when these birds emerge from water, they must spend time preening and drying their feathers. This is why you’ll often see cormorants perched with wings outstretched.
Did You Know?
To cool off, a white-breasted cormorant will flutter its gular pouch, located just below the beak.