The eggs were all nicely sitting on the mesh. But the ones that hatched during the night must have been running around, making all the other eggs to roll over to the four sides of the incubator. I think this must be bad for them.
We had an incubator in our classroom. At day 18, I took the eggs of the turner and placed them on the wire mesh at the bottom of the incubator. A few hatched during the day and they were taken out and placed under the heat lamp in the brooder (cute yellow kiddy pool). However, three chicks...