John Chan / California brown pelicans (Pelecanus occidentalis californicus) roosting on a mudflat, with a flock of Elegant terns (Thalasseus elegans) nearby, Southern California, USA May/2019

Tui De Roy / Brown pelican (Pelecanus occidentalis) feeding chicks at nest, Puerto Ayora / Academy Bay, Santa Cruz Island, Galapagos

Tui De Roy / Brown pelican (Pelecanus occidentalis) feeding chicks at nest, Puerto Ayora / Academy Bay, Santa Cruz Island, Galapagos

Tui De Roy / Split level view of Brown pelicans (Pelecanus occidentalis) feeding, Tortuga Bay, Santa Cruz Island, Galapagos

Tui De Roy / Brown pelican (Pelecanus occidentalis) close up whilst resting, Punta Suarez, Espanola Island, Galapagos

Ole Jorgen Liodden / Brown pelican (Pelecanus occidentalis urinator) close up of throat pouch skin, with beak open, Galapagos.

Tui De Roy / Brown pelican (Pelecanus occidentalis) diving in flight, Galapagos

Tui De Roy / Brown pelican (Pelecanus occidentalis) Galapagos

Ross Hoddinott / Brown pelican (Pelecanus occidentalis) diving for fish with the Athala II boat in the background, Espumilla beach, Galapagos, Ecuador. April.

Bence Mate / Dalmatian pelicans (Pelecanus crispus) underwater view of group feeding, Lake Kirkini, Greece. Highly commended in the GDT competition 2013. Commended in the Wildlife Photographer of the Year Awards c...

Claudio Contreras / Brown pelican (Pelecanus occidentalis) fishing, Cabo Pulmo National Park, Sea of Cortez (Gulf of California), Mexico, July

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

Tui De Roy / Brown pelican (Pelecanus occidentalis) in flight above wave. San Cristobal Island, Galapagos, Ecuador, June.

Visuals Unlimited / Brown Pelican (Pelecanus occidentalis) diving, Florida, USA, digital composite

Gerrit Vyn / Flock of oiled Brown Pelicans (Pelecanus occidentalis) on a beach behind an oil covered containment boom. This nesting colony is the largest in Louisiana and was heavily contaminated by the BP Deepwat...

Pete Oxford / Brown Pelicans {Pelecanus occidentalis} flying in V-formation, Ecuador

Pete Oxford / Juvenile brown pelican {Pelecanus occidentalis} on beach, Espanola/Hood Is, Ecuador Book page 98

John Downer / Brown pelicans and fishing trawler. San Lucas, Mexico.

Lynn M Stone / American white & Brown pelican P. occidentalis}, Florida, USA

Tui De Roy / Brown Pelican (Pelecanus occidentalis) hunting baitfish, Urvina Bay, Isabela Island, Galapagos Islands, Ecuador

Pete Oxford / Brown Pelican (Pelecanus occidentalis) on water, Urbina Bay, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) flying, Black Turtle Cove, Santa Cruz Island, Ecuador

Winfried Wisniewski / Brown Pelican (Pelecanus occidentalis) landing, San Diego, California

Tom Vezo / Brown Pelican (Pelecanus occidentalis) flying, California

Konrad Wothe / Brown Pelican (Pelecanus occidentalis) perched on rocks with ocean waves in background, Galapagos Islands, Ecuador

Tim Fitzharris / Brown Pelican (Pelecanus occidentalis) flock taking flight from a rocky shoreline, Isla Isabel, Nayarit, Mexico

Tui De Roy / Brown Pelican (Pelecanus occidentalis) three chicks begging for food from freshly returned parent, Academy Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) juvenile, Academy Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) feeding chicks by regurgitation in Mangrove (Avicennia sp) nest, Turtle Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) guarding chicks in Mangrove (Avicennia sp) nest, Turtle Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) catching mullet underwater, Turtle Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) plunge diving in coastal shallows, Academy Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) parent guarding nestlings in salt bush thickets, Rabida Island, Galapagos Islands, Ecuador

Winfried Wisniewski / Brown Pelican (Pelecanus occidentalis) group perched on rock with Cormorants, San Diego, California

John Chan / Brown Pelicans (Pelecanus occidentalis) diving for fish at a tidal basin, Bolsa Chica Ecological Reserve, Orange County, California, USA, May.

Maxime Aliaga / Brown pelican (Pelecanus occidentalis) portrait, Isabela Island, Galapagos

John Chan / Brown pelican (Pelecanus occidentalis) and shorebirds taking flight as American Avocets (Recurvirostra americana) forage at a tidal basin, Bolsa Chica Ecological Reserve, Southern California, USA, Nov...

John Chan / Brown pelican (Pelecanus occidentalis) preening as shorebirds fly by at a tidal basin, Bolsa Chica Ecological Reserve, Southern California, USA, November.

John Chan / Brown pelican (Pelecanus occidentalis) ruffling its feathers while roosting at a tidal inlet, Bolsa Chica Ecological Reserve, Southern California, USA, October.

John Chan / Brown pelican (Pelecanus occidentalis) swimmings by at a tidal basin, Bolsa Chica Ecological Reserve, Southern California, USA, October.

John Chan / Brown pelicans (Pelecanus occidentalis) gathering with Western gull (Larus occidentalis), Elegant terns (Thalasseus elegans), Snowy egrets (Egretta thula) , Great egrets (Ardea alba) and Great blue he...

John Chan / Brown pelicans (Pelecanus occidentalis) flock taking flight with Elegant terns (Thalasseus elegans) and Double-crested cormorants (Phalacrocorax auritus), during a feeding frenzy, Bolsa Chica Ecologic...

John Chan / Brown pelicans (Pelecanus occidentalis) gathered with Western gulls (Larus occidentalis), Elegant terns (Thalasseus elegans) and Double-crested cormorants (Phalacrocorax auritus) during a feeding fren...

John Chan / Brown pelicans (Pelecanus occidentalis) swimming by, one taking flight, as they forage in a tidal basin, Bolsa Chica Ecological Reserve, Southern California, USA, August.

John Chan / American white pelicans (Pelecanus erythrorhynchos) foraging cooperatively to herd and capture prey. A Brown pelican (Pelecanus occidentalis) dives in the background, Bolsa Chica Ecological Reserve, S...

Jeff Foott / Brown pelican (Pelecanus occidentalis). Espiritu Santo National Park, Mexico.

Franco Banfi / Brown pelican (Pelecanus occidentalis) feeding underwater, Eastern Pacific Ocean, Bahia Magdalena, Baja California, Mexico

Franco Banfi / Brown pelican (Pelecanus occidentalis) feeding underwater, Eastern Pacific Ocean, Bahia Magdalena, Baja California, Mexico.