Gabriel Rojo / South american tern colony {Sterna hirundinacea} Valdez peninsula, Argentina

Roland Seitre / Conservation worker Ana Maria Velasquez and an assistant with artificial nesting boxes for parrots to raise chicks in. Orejiamarillo Nature Park, Jardin, Antioquia, Colombia.

Bryan and Cherry Alexander / Striated / Forster's caracara (Phalcoboenus australis) in flight over West Point Island, Falkland Islands.

Bryan and Cherry Alexander / Boys feeding fish to a sealion surrounded by Pelicans (Pelicanus occidentalis) in Puerto Ayora fish market, Santa Cruz, Galapagos Islands, January 2005.

Tim Laman / Galapagos penguin (Spheniscus mendiculus) portrait, Galapagos, Endangered species

Tim Laman / Galapagos penguin (Spheniscus mendiculus) with chick, Galapagos, Endangered species

Tim Laman / Great blue heron (Ardea herodias) on rocky shore, Galapagos

Tim Laman / Blue-footed booby (Sula nebouxii excisa) taking off from the water. Punta Vincente Roca, Isabela Island, Galapagos Islands.

Tim Laman / Swallow-tailed gull (Creagrus furcatus) flying. Champion Islet off Floreana (Charles) Island, Galapagos Islands.

Tim Laman / Brown pelican (Pelecanus occidentalis) subadult flying. Champion Islet off Floreana (Charles) Island, Galapagos Islands.

Tim Laman / Blue-footed booby (Sula nebouxii excisa) flying. Punta Vincente Roca, Isabela Island, Galapagos Islands.

Tim Laman / Galapagos penguin (Spheniscus mendiculus)swimming. Punta Vincente Roca, Isabela Island, Galapagos Islands.

Tim Laman / Nazca Booby / masked booby (Sula dactylatra granti) mating pair, Espanola (Hood) Island, Galapagos Islands.

Tim Laman / Nazca booby / masked booby (Sula dactylatra granti) flying. Punta Vincente Roca, Isabela Island, Galapagos Islands.

Tim Laman / Galapagos penguin (Spheniscus mendiculus) hopping on a rock. Punta Vincente Roca, Isabela Island, Galapagos Islands.

Tim Laman / Magnificent frigatebird (Fregata magnificens) female flying, seen from below. Santa Cruz Island, Galapagos Islands.

Tim Laman / Galapagos penguin (Spheniscus mendiculus)swimming. Punta Vincente Roca, Isabela Island, Galapagos Islands.

Tim Laman / Nazca Booby / masked booby (Sula dactylatra granti) flying, Espanola (Hood) Island, Galapagos Islands.

Tim Laman / Espanola (Hood) mockingbird (Nesomimus macdonaldi) standing on a camera tripod. Espanola (Hood) Island, Galapagos Islands.

Tim Laman / Swallow-tailed gull (Creagrus furcatus) roosting. Champion Islet off Floreana (Charles) Island, Galapagos Islands.

Tim Laman / Magnificent frigatebird (Fregata magnificens) adult male flying. Santa Cruz Island, Galapagos Islands.

Tim Laman / Galapagos dove (Zenaida galapagoensis) Espanola / Hood Island, Galapagos Islands, June

Tim Laman / Galapagos hawk (Bueto galapagoensis) perched, Fernandia / Narborough Island, Galapagos, June

John Cancalosi / American wood stork / ibis {Mycteria americana} with young at nest, Venezuela

Tom Vezo / Galapagos flycatcher (Myiarchus magnirostris) Galapagos Darwin Centre, Santa Cruz Island, Galapagos

Mike Read / Galapagos flycatcher {Myiarchus magnirostris} Santamaria Is, Galapagos

Tom Vezo / Female mallard duck {Anas platyrhynchos} in flight, south east, Arizona, USA.

Tom Vezo / Galapagos Flycatcher {Myiarchus magnirostris} Darwin Centre, Santa Cruz Island, Galapagos.

Tom Vezo / Galapagos Flycatcher {Myiarchus magnirostris} portrait on branch, Darwin Centre, Santa Cruz Island, Galapagos.

Tom Vezo / Galapagos mockingbird calling {Nesomimus trifasciatus} Tower Islands, Galapagos

Mike Read / Speckled hummingbird {Adelomyia melanogenys} San Isidro Ecuador