The more I read these posts the more I realise the amount of people who do not have a clue about Rollers and Tumblers, what Mr Freebird has said about Tumblers is wrong, around the Birmingham area not so many years ago there were roller clubs which would fly these Tumblers which I might add were only found around this area, and probably why you are confused, if you were to see a good kit of Tumblers from around the Birmingham area in a competition they would take your breath away to the extent that you would want to get rid of your rollers and buy a kit of these.
Due to the popularity of these birds and the amount of stealing of kits of good birds that have been stolen, the sport of Tumbler flying around this area has been decimated, but believe me these birds were a wonderful site to see.