Zoo portraits

A peacock spreads his feathers at the Hagenbeck Zoo in Hamburg, Germany, April 30, 2013.

A Humboldt penguin seen through the window of an aquarium at the Hagenbeck Zoo, April 30, 2013.

A Rotschild giraffe stands in its enclosure at the Hagenbeck Zoo, May 7, 2013.

A donkey looks into the camera at the Hagenbeck Zoo, May 7, 2013.

An ostrich looks out from his enclosure at the Hagenbeck Zoo, May 7, 2013.

A rainbow trout is seen through the window of the aquarium at the Hagenbeck Zoo, April 30, 2013.

A visitor feeds an elephant at the Hagenbeck Zoo, May 7, 2013.

A walrus seen through the window of an aquarium at the Hagenbeck Zoo, April 30, 2013.

A pair of mallard ducks take a bath at the Hagenbeck Zoo, May 7, 2013.

Capricorn goats stand in the sun inside their enclosure at the Hagenbeck Zoo, May 7, 2013.

Goats watch from inside their enclosure at the Hagenbeck Zoo, May 7, 2013.

A polar bear watches from inside his enclosure at the Hagenbeck Zoo, April 30, 2013.

Flamingos enjoy the sun at the Hagenbeck Zoo, May 7, 2013.

A lion inside his enclosure at the Hagenbeck Zoo, May 7, 2013 in Hamburg, Germany.

The eye of a donkey at the Hagenbeck Zoo, May 7, 2013.

Lions inside their enclosure at the Hagenbeck Zoo, April 30, 2013.

A pony looks into the camera at the Hagenbeck Zoo, May 7, 2013.