They are too little to eat solid food yet, AND they are too young to be removed from the mother and adopted out. Kittens usually don’t leave their mothers until 8 to 10 weeks, when they are old enough to be adopted at that time.
She moves them around because that’s what mother cats do. I don’t know why, but sometimes they just fuss around with moving their kittens. They are pooping and peeing but you don’t see it because when the mother licks and cleans them, she stimulates them to pee and poop with her tongue. She ingests that and you don’t see it. In a couple of weeks, place a litter box with non clumping plain clay litter near their nest. She will use it and the kittens will start using it too, watching what their mother does. This is a great way to litter train these kittens before they get adopted out.
You are going to have to be careful not to step on these kittens. They don’t know what danger is, so you have to protect them. Even grown cats have a habit of laying right in front of your feet! 😀
I’ll post some links for you on kittens and cats.
http://www.alleycat.org/page.aspx?pid=292
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