They were able to overcome the force of gravity, and on our planet is no place where no one would get these feathered travelers. The Arctic Circle and in equatorial Africa, on a tiny island in the Pacific Ocean and the continental forests deaf — hard to find place, where you will not hear the bird chirping. After all, this planetka belonged to the birds for a long time before us … Now there are over 8500 species of birds, they are staggering in its diversity and stunning colorful splendor. And although it seems that they are all the time we have to see, but to find out all their secrets — not the usual task … From whom there were birds? How to capture the whole world? And due to the expression "bird brains"?