So after having success incubating goose eggs, I've put a dozen chicken eggs (from ISA's - not sure what rooster) into my incubator. I've weeded them down to 7, although I didn't chuck any viable ones because I've just candled them to put them in lockdown (due to hatch in 4 days ( and they all appear to different stages!? How does that work? None had begun developing when I set them, they all went in at the same time, same conditions yet they seem to vary from 'on track' to I'd guess maybe 12 days, possibly earlier without actually comparing side by side to photos. And the 'younger' ones are alive, I can see them moving. How does that even work? I get some variance - but its a pretty dramatic difference. Next question is, how do I deal with hatching etc... just get them out as soon as there are no other pips? I only have one incubtor.