This is normal behavior for goats. Most does will not tolerate another doe's kids. The kids will learn very quickly who to avoid, but do keep an eye on them, especially if they are very young, as sometimes the does can be over zealous in asserting their position. Most often the herd queen is the roughest with another doe's kids, as she's letting them know her hierarchy in the herd and she wants them to know she's the boss. Goats and kids are smart and they figure out how it works pretty quickly in most cases, but sometimes they just aren't paying attention to what's going on around them and they can be blindsided and even injured by another doe if they don't realize they have invaded her space. It can be the "school of hard knocks" for kids. It can help to pen mother and babies up together for a few days or even up to a couple of weeks when the kids are their most fragile as a safety measure for the kids. A first-time mother's kids are usually the most vulnerable to attacks from other does, because as they are still figuring out how everything works in the mother game and it isn't instinct for them to protect their kids from other goats, and they have to learn to be mothers on the fly. For the most part, goats just aren't real protective of their kids any way. It's common for goat mothers to stash her kids and leave them, even when the kids are very young, for hours at a time while mom is off foraging and come back for them later. Now sheep mommas, they will keep their lambs close by and rarely get separated when out browsing and wandering around feeding. You will see sheep mommas stand and wait for their little ones to catch up if they are lagging behind, which is usually not the case with goat mommas. Goats will walk off and leave their babies if they don't keep up and the kids have to learn to find their mother wherever she may be if they get separated. Now that's when you will hear the little ones doing a lot of crying calling in an attempt at trying to locate their mother. Mom should recognize her babies distress calls and will call back to them, but rarely will she go to them; they have to find her by her calls. And as a side note, not all does end up being good mothers, so we cull really bad goat mothers if they don't take care of their kids like they should. Goats are interesting creatures, aren't they?
They were all disbudded and had plenty of space too.
