via Flickr Blog by Kay Kremerskothen on 3/9/12
Every year in autumn and winter, amazing Starling formations can be seen in parts of Europe including South England, Denmark and France. During the cold months, the birds become highly gregarious and turn into huge flocks of highly variable size.
Hundreds of thousands of birds can be part of the flocks. They form tight sphere-like formations in flight, frequently changing their shape providing stunning sights.