My guinea keets are about a week old now. But two of them have poop on their bottoms. They had a difficult hatch I washed it all off and dried them. One of the keets appears a little weaker than the others. Not so bright eyed and much smalller. They are eating and drinking. I have put vitamins in their water Is there anything else I can do for the weaker one to build him up? I was thinking kitten food but wanted to check this was safe first.