Parents aren't feeding one-day old babies!

[Stacey]

I have two pigeons in my care that have successfully had babies before and raised them, but one hatched yesterday, the other one over night (kind of close together, huh?) And the mom's not tending to them and the dad's been upset all along because she chose another nest site this time, so he's not really been involved and still won't do anything. I had to take them away today and go it alone with them, if they were going to have any chance it looked like.

My questions are:
How often do they need to eat and how much at this stage?
Don't they eat the crop milk replacement over night as well, not just during the day?
They haven't seemed to have pooped yet, but then I've only gotten them to eat a small amount. Do I have to stimulate them to poop somehow? How often should I be trying to feed them. They are both having a little bit of a feeding response. I've got them in a warming basket.

Thanks, any quick assistance would be appreciated,
Stacey