Recorded at around 5am on 29th June 2010 at Rye Harbour Nature Reserve, E. Sussex, UK

Imagine a "swarm" of Sea Gulls flying in circles around a small marsh pool.

This was so loud I could hear from about a mile away, although at that distance it was quite hard to decipher what it was exactly.I nearly passed it off as the sea in the distance.However, since it was directional I thought I'd go and have a look anyway.