Juan Carlos Munoz / Double-crested Cormorants (Phalacrocorax auritus) and Brown pelicans (Pelecanus occidentalis) on small island, Isla Contoy National Park, Quintana Roo, Yuccatan Penninsula, Mexico

Juan Carlos Munoz / Double Breasted Cormorant (Phalacrocorax auritus) resting beak in plumage. Everglades National Park, Florida, USA, February.

Eric Baccega / Double crested cormorant (Phalacrocorax auritus) swimming on water at sunset, Cap Breton Highlands National Park, Nova Scotia, Canada, September

Tim Fitzharris / Double-crested Cormorant (Phalacrocorax auritus) drying its wings, North America

Michael Durham / Double-crested Cormorant (Phalacrocorax auritus) group nesting in Red Mangroves (Rhizophora mangle), Biscayne Bay, Florida

Ingo Arndt / Double-crested Cormorant (Phalacrocorax auritus) preening, Everglades National Park, Florida

Jan Wegener / Double-crested Cormorant (Phalacrocorax auritus), Florida

Jan Wegener / Double-crested Cormorant (Phalacrocorax auritus), Florida

Claudio Contreras / Double-Crested Cormorant (Phalacrocorax auritus), Royal Tern (Sterna maxima) and tourists canoeing in background, El Requeson, Gulf of California, Baja California Peninsula, Mexico, December. (Digital...

Barry Mansell / Double-crested Cormorant (Phalacrocorax auritus) Everglades National Park, South Florida, USA. May

Barry Mansell / Double-crested Cormorant (Phalacrocorax auritus) in wing-drying posture. Everglades, South Florida, USA, April.

Sebastian Kennerknecht / Double-crested Cormorant (Phalacrocorax auritus) drying wings, La Jolla, California