Every year swallows fly 38.000 kilometers from the northern to the southern hemisphere and back.
The Mongolian khan and the Chinese emperor went hunting with 500 falcons and an entourage of 10.000 people.
It is impossible to suck your own elbow.
All the bees in the world visit 3 trillion flowers every day, producing around 3,000 tons of honey.
Geese were the first birds domesticated by man.
Grand piano consists of about 12.000 parts.
