Poor little lambs that can't be raised by their mother for one reason or another.
Another good surrogate mother is a nanny goat.
They easily accept lambs and let them nurse.
Many farmers/ranchers have a few nanny goats for this very purpose.
They kid out their goats about two months before the ewes lamb out.
This means that when there are bum lambs, the kids are big enough to wean from their mothers and the lambs placed on the goat in place of the kid.
Can you see in this herd of goats there are two lambs, I've written lamb on them in red.
Okay so you probably can't see it...but can you pick out the lambs?
Anyways, the lambs are just a part of the herd.
Another greatly used option of feeding and raising bum lambs.
Bottle feeding them.
This is probably the funnest and best chore for little kids.
But really if there is nothing like having a pen of bum lambs right outside your house waiting to be fed or played with.