OK, day 24 and another one hatched out into my hand this morning.
I put my hand under mum to see what was going on under there and I felt an eggshell so I took it out but it had a little wee chick inside who had just finished zipping the egg and he dropped out onto my hand!!! wow, a little black and grey one!!
This hatching is really weird, first mum rolls the eggs in and out then they all arrive late.
There is one more egg to hatch which I will check tommorrow, after the shock of finding this little one i had to stop searching so she would dry off under mumma!!