Nature Picture Library offers the best nature photographs and footage from the world's finest photographers, to license for commercial and creative use. More than 700,000 images and video clips online, from tigers to turtles and elephants to sharks.
Rose Summers / Two Common kestrel (Falco tinnunculus) chicks sitting in entrance of nest hole in tree trunk, one chick begins flapping its wings to strengthen them, Devon, England, UK, June.
Espen Bergersen / Common Loon (Gavia immer) flapping wings in water, Iceland, May.
John Chan / Great horned owl (Bubo virginianus) chicks stretching and flapping their wings, Southern California, USA, May.
Russell Cooper / Mandarin duck drake (Aix galericulata) from behind flapping its wings. Southwest London, UK. February.
Sue Flood / Emperor penguin (Aptenodytes forsteri) chick flapping wings, Snow Hill Island rookery, Weddell Sea, Antarctica. November.
SCOTLAND: The Big Picture / Atlantic puffin (Fratercula arctica) flapping with sand eels in beak, in evening light, Fair Isle, Shetland, Scotland, UK, June.
Staffan Widstrand / Brunnich's Guillemot (Uria lomvia) stretching wings and calling on small ice floe, Svalbard, Norway, July
Eric Medard / Little owl (Athene noctua) young owlet stretching wings in the rain, France, July
David Pattyn / Bewick's swans (Cygnus bewickii) four in flight, Den Bosch, The Netherlands, January
Tui De Roy / White bellied woodstar (Chaetocercus mulsant) three hovering around red flowers, Guango private reserve, Papallacta Valley, Andean Cloud Forest, East slope, Ecuador
George Sanker / Purple gallinule (Porphyrio martinica) moving across waterlily covered surface, Everglades National Park, Florida, USA, March
Orsolya Haarberg / Atlantic puffin (Fratercula arctica) with fish in its beak, wings spread, Rost Archipelago, Lofoten, Nordland, Norway, July