Hi Mike, unfortunately they can't tolerate milk so best to just offer them water. I'm just not sure without knowing how old they are what stage they're at in their development, and therefore their feeding needs.
Are they begging/nudging your hands for food or if you scatter seeds around them, are they attempting to feed themselves?
(I'm just on a phone call, I'll be back in a minute to discuss feeding, sorry about that !!).
(Thanks Cathy for the links).
Janet