ocr: CORMORANTS SLENDER BILL - HERE ARE 28 SPECIES of cormorants, and they feed by pursuing fish underwater. Cormorants can reach a depth of more than 75 feet (23 m), and their dives can last up to a minute. On land, they often rest with their wings held open. This helps to dry their feathers. WEDGE- GREAT CORMORANT SHAPED TAIL This bird is the largest species of cormorant. KEY FACTS