pigeon/horse etc fancierDLHsomeone who breeds or is interested in a particular kind of animal or plant 饲养[喜欢]鸽子/马等的人
Examples from the Corpus
pigeon/horse etc fancier• Robert is a pigeon fancier and a member of the Johnstone Social FlyingClub.• Although this usage has almost disappeared, it is still visible in pigeon fanciers.