when we went to barbados a BBS farmer joked that barbadian sheep cannot count !! He told of us of tales of them having 4/5 lambs sometimes. great breed, very lean, grand animals.
umm yeah will it depends on the indiviudal ewe, we had two sets of trips last year (one due this year) and we found ewes very much did it all themselves, big hefty ewes tho, with udders like cows. If that wasnt the case, we would otherwise supplementary feed or remove one (i m always happy to receive a molly lamb) Or if you are adept at fostering thats another option. Good luck, keep up her sugars !!