Why do we never see birds urinating? Nature designed birds to be as light as possible to enable them to fly. For this reason, they don’t have a bladder and any fluids they consume make their way, via the kidneys, to a device in the lower intestine called the cloaca. This combines liquids waste with solid waste to make the watery droppings so beloved of pavements, clotheslines and statues of previously dignified political and military leaders.
How high can a butterfly fly?
Some butterflies migrate and when doing so will quite happily fly a hundred or so metres up. It's been reported, for instance, that workers near the top of New York City's 443-metre-tall Empire State Building have seen Monarch butterflies flutter by their windows.
But that's not all. If caught in an updraught, butterflies can reach 3000 metres or more and survive.
No comments:
Post a Comment