Murmuration: /merr'meuh ray"sheuhn/ n.
1. The act or instance of murmuring; a murmur.
2. The collective noun for a group of starlings: a flock.
Murmuration from Sophie Windsor Clive on Vimeo.
The video is by Sophie Windsor Clive and Liberty Smith -- a pure accident witnessed (and caught on film) as the women canoed across the River Shannon in Ireland.