Everyone knows that starlings can fly in huge flocks, performing rolling and mesmerising formations, but it is less known that rooks do the same aerial ballet. And anyway, poor rooks, not exactly our favourites - they are usually considered ugly and annoying, how could they do anything beautiful? However, having experienced that aerial dance taking place in a Budapest cemetery you may open your heart to those little feathery guys. And thanks to them perhaps to the nature as well...