Ah, yes, I checked one ewe that scanned with a single three times, very thoroughly. Second lamber, no sign of enlarged vulva, udder development or live lamb and decided she'd lost the lamb. 22.5 weeks after the ram came out I find her standing next to a cold lamb still in the bag. She's now in an adopter with one of my neighbour's triplet Berrichons and will hopefully use all that milk to good effect.