Double-crested Cormorant (Phalacrocorax auritus)
The Double-crested Cormorant (Phalacrocorax auritus) mainly eats fish and hunts by swimming and diving. Its feathers, like those of all cormorants, are not waterproof and thus spends time drying them out after spending time in the water. Once threatened by the use of DDT, the banning of this chemical has helped to increase numbers of this species. But traces of DDT still remain in U.S. waterways, even after several decades since it was banned.