This is my first time incubating and tonight (day 20) I have two out of six which have externally pipped. One is very active and I can see his little beak poking through the hole. The other is still but has broken through the membrane. Anyway, I am leaving well alone but what do I do when the active chick hatches (hopefully overnight) yet the others haven't? I thought I'm not supposed to open the incubator whilst the eggs are hatching, but how long will a hatched chick survive in the incubator without food or water? We have a box and heat lamp set up all ready and were planning on feeding chick crumb. Also I have another batch on day 15, will these be able to go in with the chicks that (hopefully) hatch out tonight/tomorrow and will be 1 weekish old? Any other advice would be very welcome. It is so exciting but very tense here tonight!!!