Composite image. Ladybirds can fly up 74 miles in a single flight and reach almost 40mph (as fast as a racehorse).
The sky is a crowded world where mammals, birds and insects hunt, escape, mate, defend territory, sleep and even die on the wing. Survival up there depends not just on beating gravity or mastering flight, but also out-flying the competition.
SuperNature: Wild Flyers - Masters of the Sky, Wednesday at 8 p.m. on PBS 6.
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