Starling, 椋鳥

Marco Campazas, 39, spotted this flock of birds swarming through the sky while he was driving through Spain's Logrono City on Christmas day

Watch starlings move together 'like a lava lamp' in a hypnotic display | Daily Mail Online
Read more: http://www.dailymail.co.uk/sciencetech/article-4076284/Watch-stunning-moment-thousands-starlings-like-lava-lamp-hypnotic-display.html#ixzz4UKqo6Fx8
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A murmuration of migrating starlings is seen across the sky near the city of Beer Sheva, southern Israel December 26, 2016. (Photo by Baz Ratner/Reuters)
The Day in Photos – December 27, 2016
http://avax.news/fact/The_Day_in_Photos_December_27_2016.html