Tui De Roy / White-vented storm petrel (Oceanites gracilis galapagoensis) 'walking' on surface of water whilst foraging, Galapagos

Roy Mangersnes / Elliot's storm-petrel (Oceanites gracilis) feeding on the surface near the west coast, Isabela Island, Galapagos.

Tui De Roy / White-vented storm petrel (Oceanites gracilis galapagoensis) 'walking' on surface of water whilst foraging, Galapagos

Tui De Roy / White-vented storm petrels (Oceanites gracilis galapagoensis) 'walking' on surface of water whilst foraging, Galapagos

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) chick in nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) chick in nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) chick in nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) above from nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrels (Pterodroma phaeopygia) collecting nesting material. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) emerging from nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) on debris from nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) in undergrowth. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) in undergrowth. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) on debris from nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) on debris from nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) on debris from nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) on debris from nesting hole. Critically endangered. Santa Cruz Highlands, Galapagos Islands, Ecuador, June.

Ole Jorgen Liodden / Elliot's Storm-petrel (Oceanites gracilis) walking on water feeding. Galapagos

Staffan Widstrand / White-Vented / Elliot's Storm Petrel (Oceanites gracilis) gliding and skipping over calm water. Fernandina Island, Punta Espinosa, Galapagos, Ecuador, April.

Pete Oxford / Galapagos / Dark rumped petrel (Pterodroma phaeopygia) being inspected by park warden, Highlands of Santa Cruz Island, Galapagos Islands, Critically endangered species, July 2008

Pete Oxford / Galapagos / Dark rumped petrel (Pterodroma phaeopygia) Highlands of Santa Cruz Island, Galapagos Islands, Critically endangered species

Pete Oxford / Galapagos / Dark rumped petrel (Pterodroma phaeopygia) nesting burrow being inspected by a Park Warden for breeding status. Highlands of Santa Cruz Island, Galapagos Islands, Critically endangered spe...

Pete Oxford / Galapagos storm petrel {Oceanodroma tethys} Galapagos

Pete Oxford / Galapagos storm-petrel (Oceanodroma tethys) in flight over pacific ocean, Gardner Bay, Española (Hood) Island, Galapagos Islands, South America

Pete Oxford / Short-eared owl (Asio flammeus galapagoensis) with Storm petrel prey. Tower / Genovesa Is, Galapagos

Pete Oxford / Short-eared owl (Asio flammeus galapagoensis) with Storm petrel prey. Tower / Genovesa Is, Galapagos

Pete Oxford / Short-eared owl (Asio flammeus galapagoensis) with Storm petrel prey. Tower / Genovesa Is, Galapagos

Pete Oxford / Short-eared owl (Asio flammeus galapagoensis) with Storm petrel prey. Tower / Genovesa Is, Galapagos

Pete Oxford / Short-eared owl (Asio flammeus galapagoensis) with Storm petrel prey. Tower / Genovesa Is, Galapagos

Pete Oxford / Short-eared owl (Asio flammeus galapagoensis) with Storm petrel prey. Tower / Genovesa Is, Galapagos

Nate Chappell/ BIA / Galapagos Petrel (Pterodroma phaeopygia) flying over ocean, Galapagos Islands, Ecuador

Tui De Roy / White-vented Storm-Petrel (Oceanites gracilis), Rabida Island, Ecuador

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) walking to nest at night, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Petrel (Pterodroma phaeopygia) nesting area being baited with rat poison to remove introduced rats around colony, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Galapagos Petrel (Pterodroma phaeopygia) nesting area being baited with rat poison to remove introduced rats around colony, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) nesting area in gulley beneath Johnnyberry (Miconia sp) trees, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) with rat baiting station, near nesting burrow, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) near nesting burrow beneath Johnnyberry (Miconia sp) trees, Galapagos Islands, Ecuador

Tui De Roy / White Vented Storm Petrel (Oceanites gracilis) feeding on planktonic organisms by pattering on sea surface, offshore, Santa Cruz Island, Galapagos Islands, Ecuador

NIGEL MARVEN / Galapagos storm petrels {Oceanodroma tethys} Galapagos I

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) flying, Isabela Island, Galapagos Islands, Ecuador

Tui De Roy / Galapagos Petrel (Pterodroma phaeopygia) landing at night, Santa Cruz Island, Galapagos Islands, Ecuador