Recently I have noticed a small flock of between 6 and 10 birds circling together at the top of Wash Lane near Bury centre. Right over that cafe/diner place on the left hand side. They look like pigeons and circle about 50 foot high. Bear in mind I am stuck in traffic and can't get a proper look. Are they pigeons and if so is this behaviour normal. I've researched it and the only sensible conclusion is a local pigeon fancier exercising his birds??