My Zebra Finches have laid eggs again and I want to hand feed the babies when they hatch. I will hand feed them because the parents attacked their last babies when the babies became adults. I know how and what to hand feed them. How many ML's do I feed each baby? And do they need a heat lamp or is it okay if they are in their own nests?(please no "don't hand feed them they die") I will hand feed them once their eyes open. P.S. How old are they when their eyes open?