Farmers Peter Crook and Tricia Stewart were expecting their Soay lambs in March.
So imagine their surprise when the baby sheep start arriving on almost a daily basis since October 31 – the earlier the farmers have ever seen them come.
The pair say in 18-years of sheep farming this is by far the earliest their flock has lambed.
Tricia, 58, of Elysium Farm, Holmfirth, near Huddersfield, said: “For the past five days we have been going up to the field and there has been a new lamb there.
“They have been ok because it is dry but they don’t fair so well if it’s cold and wet outside. They are all healthy thankfully.”