Sergio Hanquet / Green sea turtle (Chelonia mydas), two viewed from above. Tenerife, Canary Islands.

David Tipling / Barn owl(Tyto alba) flying, North Norfolk, England, UK. february

Tony Wu / Blue whale (Balaenoptera musculus) swimming in s motion, Sri Lanka, Indian Ocean.

Andy Rouse / Mute swan (Cygnus olor) stretching in morning light, UK, February.

Tony Wu / Humpback whales (Megaptera novaeangliae) engaged in courtship, with the male hovering above the female. Vava'u, Tonga, Pacific Ocean.

Bence Mate / Great egret (Ardea alba) two fighting in flight, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. January.

Andres M. Dominguez / Greater flamingos (Phoenicopterus roseus), Dehesa de Abajo, Sevilla, Spain, August.

Michel Poinsignon / Great white egret (Egretta alba) preening feathers, Pusztaszer, Hungary, April

Michel Poinsignon / Great white egret (Egretta alba) detail of plumage and legs from the front, Pusztaszer, Hungary, April

Brent Stephenson / Australasian gannet (Morus serrator) flying with waves breaking below, Muriwai, Auckland, New Zealand, October.

Melvin Grey / Violet-tailed sylph hummingbird (Aglaiocercus coelestis) hummingbird adult male, approaching flower to feed, Tandayapa, Ecuador