<p>Each year the Cookham Dean Gravity Grand Prix is run to entertain and raise money for the air ambulance. &nbsp;</p> <p>This year we have built a rather large birdhouse which is about 3.5m high and 1m wide! &nbsp;The race is downhill through the village of Dookham Dean and has a couple of rather sharp corners. &nbsp;</p> <p>It is very likely that the birdhouse will end up in a tree....</p> <p>So we are raising money for the Air Ambulance as this is a service we hope that none of us ever need to have to use!</p> <p>Any donation will be gratefully received.</p>