Sorry, couldn't resist the pun.
From the "rig" post I'm guessing that an udder on a "barren" ewe means they're not barren. How much udder is enough udder and is there any way of telling when they'll have their lambs.
I usually scan and know dates but our ram seemed to be firing blanks and I left him in with them for ages but one of his ewes is now wide and has a small udder. The scanner said she was a "maybe". How do I tell the difference between overweight and pregnant?