The conventional method of muling is usually british cock to canary hen with the exceptuion of the bullfinch,(the bullfinch cock will only breed with the bullfinch hen,something to do with penis alignment???maybe bullie cocks have a drink problem lol !! )you can reverse the pairings and use canary cocks but this is usually more difficult.There are 2 sizes of mules at shows,mules and miniature
mules.Norwich yorkshire and border are the larger type of canary used for mules,coloured dimorphic
fifes and irish for miniature mules,norwich are the prefered choice for muling,although personally I th