A murmuration
consists of thousands of tiny starlings (birds)
collectively swirling in flight. The mesmerizing act is
typically seen at the beginning of winter, right before
dusk, as the birds look for a place to roost for the night.
During the action, birds
reach speeds of up to 20 mph.
In the video above, Vimeo
user Sophie Windsor Clive captured an incredible example
of the event on the River Shannon in Ireland.
