Good advice, HOWEVER, I had a ewe lying on her own for days, up and down, wandering aimlessly, but still eating. No sign of any classic labour indicators. Today, after watching her while I worked, I had another peek under her tail. Her bum has been hanging for days and I thought she'd lamb weeks ago.
Got a friend to hold her cos I wasn't happy and inside it was worse than trying to do a Rubik's cube! I had about 5 legs, an upside down head and eventually found a second head. After a lot of sighing from me as I couldn't get a matching pair of legs and nothing was budging, I phoned a friend (2nd friend as first was holding the ewe!). By the time he got there I had managed to find a little head and one leg and pulled out the tiniest ewe lamb. Next came a hefty ram lamb with both legs and head then finally managed to get the one coming backwards out. Thank god it was a black Welsh ram on a suffolk mule. Anything bigger and they wouldn't have made it.
So, whilst I agree with the advice, you need to know your ewes and go with your gut if you think something is wrong. If I'd left this one might not have had any survivors. Littlest one is enjoying some goats milk as not strong enough yet to fight for the teat.