Shapwick Heath National Nature Reserve in Somerset.
Now that's a big bird! Flock of thousands of starlings creates intimidating shapes to scare off prowling falcon | Mail Online http://www.dailymail.co.uk/news/article-2144081/Now-thats-big-bird-Flock-thousands-starlings-creates-intimidating-shapes-scare-prowling-falcon.html椋鳥科 - 维基百科,自由的百科全书 http://zh.wikipedia.org/wiki/%E6%A4%8B%E9%B8%9F%E7%A7%91
Starling - Wikipedia, the free encyclopedia http://en.wikipedia.org/wiki/Starling