yep, you’ll have a staggered hatch. Next time you can collect them over the course of 1 week and put them under her all at once.
What will generally happen is, she will sit about 2 more days after the first one hatches. That’s when the first one needs to be taken care of, and she will eventually abandon the other eggs and get up to take care of him.
If you want her to keep sitting, you can set up a brooder and take the chicks from her as they hatch, she may or may not accept them back later. Or you can let her sit until she wants to leave, and incubate the remaining wggs yourself. Again, she may or may not accept the babies back.
The one issue you may have if you do let her raise them is varying levels of mobility. A 3 day old chick is much more active than a 2 day chick, which is much more active than a 1 day old chick, and so on. the younger ones will tend to have trouble catching up to the older ones. I would keep them all confined to a relatively small area until they can all keep up with each other, before letting them roam a bigger space.
about her harming the babies, most likely it wont happen, but keep a wary eye out around the hatch time of the eldest, and have a brooder set up ready just in case.
