A murmuration is a term ascribed to a large collection of starlings seen swirling and dancing almost in a cloud-like formation. These spectacular events are common enough, signalling the onset of winter and are more commonly viewed around dusk. The video below has become something of an Internet sensation, going viral over the past week. It features a murmuration of thousands of starlings, circuling and dancing almost as one. It was taken by two English ladies holidaying in the Shannon region in Ireland's northwest. They were canoeing on one of the Shannon lakes and witnessed, and luckily filmed, this spectacular sight. Scientists are yet to figure out why or how these birds seem to move as one and the patterns are being studied more by physicists than biologists. Fascinating stuff! Anyway, enjoy!