Some unusual streaks on the right wing were thought to be bird droppings.

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The birds of prey have been brought in after library users complained of having to avoid bird droppings in the courtyard.

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The nest was daubed with white paint in an attempt to imitate bird droppings, so the birds would think it was an established nesting site.

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On the dry seabird islands off the South American and South African coasts, immense deposits of bird droppings, rich in nitrogen and phosphorus, had accumulated over centuries.

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Historically, nightingale bird droppings were used to remove stains from delicate silk garments in Japan, as well as by geishas to whiten and even skin marred by frequent and heavy use of makeup, Pacheco says.

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