I have a question i have 4 yellow legged eggs in the incubation 2 have already hatched and for some reason they can not walk they are still stuck to the sack and the sack is still on the egg shell. I was wondering would it have anything to do with the size of the eggs they are smaller than normal. I have one more that has piped around 1 pm and has not done anything since. This also happened last month with my white eggs as well. I am just not knowing why this is happening. one chick hatched on day 19 and the other today day 20. Please can anyone help.