With its distinctive white splatter mark, bird poop is a common sight on outdoor surfaces, be that a bench, your car, or your ...

Instead, their livers convert nitrogen into uric acid. This is excreted as a white, paste-like substance. But if you’ve ever looked closely at fresh bird droppings you may have spotted that it isn’t ...

The birds soon follow. Hundreds of thousands ... track influenza strains as they circle the globe. The largest white droppings belonged to the seagulls — black-headed laughing gulls and white ...