24 for both in chickens. Ducks take a lot longer, up to 72 hours pip to hatch. Zip goes about 40 minutes, but with my ducks one took about an hour to zip and that definitely would have been bad if I had rushed it. So it isn't set.So for us citiot s. . what is the time frame from internal to external and external to pip ? And is it the same for ducks vs chickens ?