Gary to me a strain would be a line of winning pigeon or pigeons your family descended from, and continue to win for yourself through generations. There are many winning strains all over the UK and Ireland purposely bred by the individual, all from top breeders from the UK and the continent. so what im trying to say is that your van loons are a strain developed by yourself for your own requirements and have served you well. Same with anyone buying , say a busschaert,Aarden or any other for that matter. We all develope our own strain. atb Mick