Went to see a group of 25 ewe lambs today, that are away on winter grazing and found a neighbour's tup in amongst them. Went to see the owner of the tup who said it's been in 3/4 times with them over the last couple of months, but couldn't see a problem as there only ewe lambs!!, aparently he keeps climbing up a wall and jumping the fence , can you jag them to make them abort? Thanks