1112-11973 - Adult black guillemot (Cepphus grylle) in summer plumage near Vigur Island in Isafjardardjup Bay, Iceland

1112-11341 - Black-browed albatross (Thalassarche melanophrys) close-up at breeding colony on Carcass Island in the Falkland Islands

1200-698 - Male black grouse (Lyrurus tetrix) fighting on snow covered field, Finland

1112-9978 - Male Great frigatebird (Fregata minor) in breeding plumage with red gular pouch, on Genovesa (Tower) Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

1112-9945 - Adult yellow warbler (Dendroica petechia aureola) in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1112-9749 - Brunnich's guillemot (Uria lomvia) breeding and nesting site at Cape Fanshawe in the Svalbard Archipelago, Norway, Arctic, Europe

1112-9397 - Adult male Magellan goose (upland goose) (Chloephaga picta), on New Island in the Falkland Islands, South Atlantic Ocean, South America

1112-9143 - A juvenile red-footed booby (Sula sula), in its white color morph plumage in flight over the ocean in Palau, Micronesia, Pacific

860-291442 - Researcher photographing a 2.6 gram Stripe-throated Hermit hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

860-291441 - Researcher measuring a 2.6 gram Stripe-throated Hermit hummingbird wing as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

860-291440 - Researchers picking up pollen with a brush from the beak of a hummingbird Stripe-throated Hermit as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

860-291439 - Researcher measuring the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

860-291438 - Researchers picking up pollen with a brush from the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui , Costa Rica

860-291436 - Researcher catching Rufous-tailed Hummingbird (Amazilia Tzacatl) in a net set up for pollination study, rainforest at "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

860-291437 - Researchers picking up pollen using tape on the beak of a Rufous-tailed hummingbird as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

860-291434 - Researcher setting up a net to capture hummingbirds as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica

860-291435 - Rufous-tailed Hummingbird (Amazilia tzacatl) in a net set up by a researcher as part of a pollination study, rainforest at the "La Selva" research station in Puerto Viejo de Sarapiqui, Costa Rica