I used to keep a few......lovely they were...I found them to a very steady bird....alot bigger than your average racer. Mine did fly out ...and flew well...
I didn't treat them any different to any other pigeons I had....they were very good breeders..but I would say that you need to use a shallow nest pan and get well raised,,as I found that mine sat very tight on the nest, and had a couple of spread legged youngsters as a result
heres a couple of pictures of the ones I used to have..
NB the photos with a 'T' on them were used in an editorial we had done sometime ago about our business...and when posting them I must mention that they were gratioulsy donated by S*expletive removed*hopre Eveneing Telegraph.
As previoulsy mentioned by another member..I did sell the whites to 'Bewted' on here.