Gentoo penguins, Pygoscelis papua, on the beach at Sea Lion Island in The Falkland Isles

Phosphate works for processing guano bird droppings in Nauru in the South Pacific

Guano bird droppings in Nauru in the South Pacific

Guano in an Adelie Penguin, Pygoscelis adeliae, colony at Madder Cliffs, Suspiros Bay, at the west end of Joinville Island, Antarctica. Adelie's are a true Antarctic species which are suffering as a result of climate change, The Antarctic Peninsular, their only breeding grounds, is one of the fastest warming areas on the planet. This is causing Adelies to migrate south. They are reducing in numbers, they feed almost exclusively on Krill, which is also declining as a result of climate change.

Adelie Penguins, Pygoscelis adeliae at Madder Cliffs, Suspiros Bay, with tourists from an expedition cruise, at the west end of Joinville Island, Antarctica.

Carrion Crow (Corvus corone corone) in flight dropping Mussel (Mytilus edulis) onto ground to break it up and to feed. Angus, Scotland, UK

Carrion Crow (Corvus corone corone) in flight dropping Mussel (Mytilus edulis) onto ground to break it up and to feed. Angus, Scotland, UK

Southern carmine bee eater (Merops nubicoides), perched on a ball of elephant dung. Okavango Delta, Botswana, Africa

Common Kingfisher defecating, Denmark

Grey Heron defecating in a meadow, France