Saw a Crows Court about 30yrs ago.I was potato picking for a local farmer near my Wiltshire village at the time.The farm worker driving the tractor stopped near me and pointed to the side of a hill where the crows had already gathered.They were about a 1/4 of a mile away from us formed in a circle about 100yrds in diameter with one crow right in the middle.We thought that there were about 100/120 crows in all,very evenly spaced out.Because they were on the side of a hill the shape of the circle looked perfectly oval to us,freaked me a bit just because of the perfection of it all.After about 10 mins and a lot of noise the crow in the center took to the air and flew off, it was a if the rest gave it a bit of a head start before they all took flight and gave chase.Did not see what happened after this but the farmer told me he had seen courts before and it usually ended in death. By the way,Crows are said to be the most intelligent birds on the planet!!! Hope this helps.Cheerz Wilz64.