Stefan Christmann / Emperor penguin (Aptenodytes forsteri) pair in courtship. Atka Bay, Antarctica. May.

Pal Hermansen / Blackbird (Turdus merula) killed probably by cat, in snow, Akershus, Norway.

Konrad Wothe / Ostrich (Struthio camelus) male preening, looking headless, Samburu Reserve, Kenya, Africa

Heather Angel / Emperor penguin (Aptenodytes forsteri) parent feeding chick, another chick next to it looks headless, Antarctica

Claudio Contreras / Blue footed booby (Sula nebouxii) watching chick, Isabel Island National Park, Sea of Cortez (Gulf of California) Mexico.