This is my first time incubating eggs. I got 8 lavender banty cochins. All 8 appear to develope and today is day 21, so far 2 have hatched and another one is working on unzipping? My question is, the two hatched chicks are knocking the unhatched eggs all over the incubator, will this hurt the unhatched eggs? When should I open the bator and remove the chicks? Any answers are appreciated.

It was a wee on the smelly side. yuck.
