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

Jeff Vanuga / Double-crested Cormorant (Phalacrocorax auritus) in flight. Florida, USA, April.

Jeff Vanuga / Double-crested Cormorant (Phalacrocorax auritus) in flight over water. Florida, USA, April.

Diane McAllister / Double-crested cormorant (Phalacrocorax auritus) roosting during the daytime on the Anhinga Trail. The Everglades, Florida, USA, January

LYNN M. STONE / Double-Crested Cormorant (Phalacrocorax auritus) adults in non-breeding plumage. Tarpon Springs, Florida, USA, November.

LYNN M. STONE / Double-Crested Cormorant (Phalacrocorax auritus), adult drying its wings on a sandy beach. Tarpon Springs, Florida, USA, November.

Donald M. Jones / Double-crested Cormorant (Phalacrocorax auritus) flying, western Montana

Donald M. Jones / Double-crested Cormorant (Phalacrocorax auritus) at nest with two chicks, western Montana

Adrian Davies / Head portrait of Double-crested cormorant: (Phalacrocorax auritus) Everglades, Florida, USA

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

Doc White / Double Crested Cormorant {Phalacrocorax auritus} diving underwater to catch fish, California coast, USA, Pacific

Doc White / Double Crested Cormorant {Phalacrocorax auritus} diving underwater, California coast, USA, Pacific

Sebastian Kennerknecht / Double-crested Cormorant (Phalacrocorax auritus) drying wings, Santa Cruz, Monterey Bay, California

Sebastian Kennerknecht / Double-crested Cormorant (Phalacrocorax auritus) in breeding plumage preening, La Jolla, San Diego, California

Doug Wechsler / Double-crested Cormorant {Phalacrocorax auritus}three in flight, Stone Harbor, New Jersey, USA

Doug Wechsler / Double-crested Cormorant {Phalacrocorax auritus} in flight, Stone Harbor, New Jersey, USA

Rob Tilley / Double-crested Cormorant (Phalacrocorax auritus) with breeding plumage, Everglades NP, Florida, USA. April

Rob Tilley / Double-Crested Cormorant {Phalacrocorax auritus} close up of feathers, Florida, USA

Rob Tilley / Double-Crested Cormorant {Phalacrocorax auritus} hed profile portrait in breeding plumage, beak open, Florida, USA

Rob Tilley / Double-crested Cormorant {Phalacrocorax auritus} head on, Everglades NP, Florida, USA

Rolf Nussbaumer / Double-crested Cormorant (Phalacrocorax auritus) in flight, Port Aransas, Texas, USA. January 2003

Rolf Nussbaumer / Double-crested Cormorant (Phalacrocorax auritus) swimming with fish in bill, Sanibel Island, Florida, USA. December 1998

Tim Fitzharris / Double-crested Cormorant (Phalacrocorax auritus) group silhouetted on seastack at sunset, El Matador State Beach, California

Mike Wilkes / Double crested cormorant {Phalacrocorax auritus} juvenile on water, Florida, USA

George McCarthy / Double Crested Cormorant {Phalacrocorax auritus} Everglades NP, Florida, USA

LYNN M. STONE / Double crested cormorant {Phalacrocorax auritus} Florida, USA

Tom Vezo / Double-crested cormorant {Phalacrocorax auritus} flock resting in tree, California, USA

Tom Vezo / Double-crested cormorant {Phalacrocorax auritus} flock resting in tree, California, USA.

Tom Vezo / Double crested cormorant {Phalacrocorax auritus} California, USA

Tim Fitzharris / Double-crested Cormorant (Phalacrocorax auritus) drying wings, California

Jim Brandenburg / Double-crested Cormorant (Phalacrocorax auritus) with Painted Turtle (Chrysemys picta), California

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

Adrian Davies / Double crested cormorant {Phalacrocorax auritus} Everglades NP Florida USA

DAVID TIPLING / Double crested cormorant head portrait, Florida, USA

Mike Wilkes / Double crested cormorant swimming Florida, USA

Donald M. Jones / Double-crested Cormorant (Phalacrocorax auritus) drying wings, central Florida

Hiroya Minakuchi / Double-crested Cormorant (Phalacrocorax auritus) group flying along coast, Monterey Bay, California

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

Steven David Miller / Double-crested cormorant juvenile with fish. FL USA {Phalacrocorax auritus} Anhinga

Henley Spiers / Huge school of Spottail grunt (Haemulon maculicauda) swimming just beneath the sea surface with a Double-crested cormorant (Nannopterum auritum) diving through the air approaching its underwater prey,...

Doc White / Double crested cormorant (Nannopterum auritum) looking underwater. Magdalena Bay, Baja California, Mexico, Pacific Ocean.

Henley Spiers / Double-crested cormorant (Nannopterum auritum) hunting school of Spottail grunt (Haemulon maculicauda). Espiritu Santo Island, Sea of Cortez, Mexico.