Doug Allan / Emperor penguin males incubating eggs huddle for warmth at -40 degrees centigrade, winter, Antarctica. Green is excrement on snow. {Aptenodytes forsteri}
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Tony Wu / Sperm whale (Physeter macrocephalus), ten swimming together in gathering of more than 50 individuals. Whales with flatulence and defecating. Sri Lanka.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) colony huddling, males incubating eggs, on sea ice under full moon in polar night. Atka Bay, Antarctica. July 2017.
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Brian Bevan / Pair of Reed warblers (Acrocephalus scirpaceus) feeding young at nest, Bedfordshire, England, UK, July.
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Dave Bevan / Female Blackbird (Turdus merula) feeding chicks at nest, removing faecal sacs, Carmarthenshire, Wales, UK, June.
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Ammonite / Male Yellow dung flies (Scathophaga stercoraria) fighting over a female on a cowpat, UK.
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Ammonite / Male Yellow dung flies (Scathophaga stercoraria) fighting over a female on a cowpat, UK.
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Dave Bevan / Male Great spotted woodpecker (Dendrocopos major) entering nest hole and leaving with a faecal sac, Carmarthenshire, Wales, UK, June.
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Neil Aldridge / Dung beetle (Scarabaeidae) pushing ball of dung on Venetia Limpopo Reserve, Limpopo Province, South Africa.
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Staffan Widstrand / Kittiwakes (Rissa tridactyla) nesting on wall of house, Vardo town, Varanger Peninsula, Norway, March.
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Simon Colmer / Dung beetle (Scarabaeidae) rolling dung, Malawi. November.
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Chris Gomersall / 2020VISION / Northern wheatear (Oenanthe oenanthe) adult male in spring plumage feeding on dung flies at farm midden heap, Hertfordshire, UK, April
