Looking out of my kitchen window my eye was caught by a large flock of birds (starlings I think) all sitting along some old electric wires that span the valley.
The next morning the birds were all there again but this time sitting in a large pine tree in front of my house. They were making a real racket but as I opened my door, suddenly they all stopped in unison. It went eerily quiet for a few seconds... I stood and waited then the noise started up again, obviously it had been decided that I wasn't a threat.