I've never had this happen but people say the first one hatches at 18-19 day mark and the second egg hatches two days later. My last one was 12 hours apart
But on a serious note since there are normally two eggs per clutch there's a 50/50 chance of them being opposite genders though it is possible to get the same gender that's just more on the rarer occurrence. When my squabs hatch in the next couple of days I can probably update you on whether or...