In Norfolk recently:
"The ewe gave birth to a healthy single lamb on April 4 and she was absolutely fine - but I was really surprised she only had a single lamb because she was so large and three weeks earlier she threatened to prolapse, which is usually a sign of multiple births.
"But she cleansed and went out to grass with the other ewes and lambs, so as far as I was concerned she was done.
"Then on April 8 when I went out to check the lambs and ewes, she had two further newborn lambs which were very much alive and kicking. You can imagine my surprise".