[dillon]

do all chicks hatch on 21st day or can they go over if so by howmany days i have some jersey giant eggs in my incubator read some where they can take an extra couple of days to hatch how long over would you leave them until you took them out if they did not hatch advice welcome

[Rosemary]

I'd leave them 3 days - others might think differently. Did you candle them and remove the duds?

[dillon]

yes all candled 

[Sylvia]

Tap,with your fingernail on the shell and listen closely. You may hear a slight scratching, if so, up the humidity a bit and cross your fingers.