JIM CLARE / Buffon's / Great green macaw (Ara ambigua) chick in nest hole in Almendro tree, Costa Rica

JIM CLARE / Buffon's / Great green macaw (Ara ambigua) chick in nest hole in Almendro tree, Costa Rica

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) two adults brooding chicks age 5 weeks, Antarctica. Highly commended in the Polar Passion Category of the Nature's Best Photography Awards 2019.

Oscar Dewhurst / Mute swan (Cygnus olor), two cygnets sheltering under parent's wing. Richmond Park, London, England, UK. April.

Oscar Dewhurst / Mute swan (Cygnus olor) swimming with cygnets in misty lake in morning light. Richmond Park, London, England, UK. May.

Jack Dykinga / Burrowing owl (Athene cunicularia) female and ten chicks aged a few weeks. Marana, Arizona, USA. May.

Jordi Chias / Chinstrap penguin (Pygoscelis antarcticus) with chicks, Antarctic Peninsula, Antarctica.

John Chan / Great horned owl (Bubo virginianus) chicks stretching and flapping their wings, Southern California, USA, May.

Marie Read / Sandhill cranes (Grus canadensis) (Florida race), adult with two small chicks crossing highway, Kissimmee, Florida, USA, March.

David Pattyn / Great crested grebe (Podiceps cristatus) adults courting and greeting each other to confirm their bond. Even with the young chicks already out they often show courtship behavior to each other, Valkenh...

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony with chicks, Atka Bay, Queen Maud Land, Antarctica. October.

Stefan Christmann / Emperor penguin (Aptenodytes forsteri) two adults with chicks, age 9-12 weeks, Atka Bay, Queen Maud Land, Antarctica. October.