1. what breed are they ? anglo nubians are super vocal, for anything from hunger, to boredom to just plain conversation.
2. u spoiled them; they are used to being in the yard with you and others, and goats are herd animals, so u have now pujt them away from their herd (you and whatever else is in the yard)..
3. build a game yard for them: boxes or rocks to climb and jump on, or a barrel that cant roll over (laid on its side but fixed in place) to crawl inside or stand on, a ramp and platform to climb and lay on...
4. put a ball in the yard, one that they can pick up and run around with, but not swallow or bite pieces oout of it. mine loved plastic water bottles but those are dangerous. branches of forage hung up so they have to be goats, and stand on hind feet to pull ta the leaves will keep them busy. DO NOT USE A HORSE NET. i hung two of my babies by accindent when using a horse net for hay and they caught themselves in it many many years ago...
goats are intelligent and friendly and group oriented... so they will be vocal about being left alone. also, dont feed every time u go to the yard, as they will yell, and then u feed them, so they have learned that yelling=food.
some goats, just like some people, like less handling or being picked up; brushing is good, can also teach them simple commands (a little old for that now, but i managed to teach one of my kids to sit , jump up, off, and say hello.... food obviously is the reward for modulating the behaviors.