 In New Zealand natural colored Romneys can be registered in the Romney section of the Black and Natural-colored Sheep Breeders Association, but are still eyed with suspicion by many breeders of white Romneys.The sheer number of Romney ewes and lambs in New Zealand make the breed not only the biggest input by tonnage to overseas and domestic wool trade, but also the major part of the country's export frozen lamb trade, as purebreds and first-generation crosses.New Zealand is the world's largest exporter of frozen and chilled lamb.