Grief of the penguins: Scores of birds bowed in mourning after the deaths of their chicks

Prostrate on the icy tundra of the Antarctic, they appear the picture of misery after the deaths of their chicks. The extraordinary image capturing penguins in an act of mass mourning was taken on the Riiser Larsen Ice Shelf in Antarctica by photographer Daniel J. Cox. He has spent 25 years travelling from pole to pole documenting everything from polar bears to penguins and getting up close and personal is all in a day's work.