Building the Birds Nest Olympic stadium, Beijing, China, Asia

Building the Birds Nest Olympic stadium, Beijing, China, Asia

Building the Birds Nest Olympic stadium, Beijing, China, Asia

Four month old Harpy eagle chick (Harpia harpyja), testing its wings in the nest, Alta Floresta, Amazon, Brazil, South America

Adult red-footed booby (Sula sula) returning to the nest site with nest building material in the Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Construction at Olympics site, The Beijing National Stadium, The Bird's Nest, China

Adult Adªlie Penguin (Pygoscelis Adeliae) collecting stones for the nest construction. Commonwealth Bay, East Antarctica

European or Dominulus paper wasp Polistes dominulus doing brood care at the nest

King Shag building its nest, Falkland Islands

Digger wasp : Sand wasp (Bembecinus tridens) on sand, La Truchere Nature Reserve, Burgundy, France

Digger wasp : Sand wasp (Bembecinus tridens) digging, La Truchere Nature Reserve, Burgundy, France

Imperial Cormorant building its nest, Falkland Islands

Imperial Cormorant building its nest, Falkland Islands

Puffin carrying materials for the nest, Norway

Imperial Cormorant building its nest, Falkland Islands

Imperial Cormorant building its nest, Falkland Islands

Imperial Cormorant building its nest, Falkland Islands

King Shag building its nest, Falkland Islands

House Sparrow and twigs to the nest, Alsace France