I can hear chicks in the eggs, but none have hatched yet and they are a day late. What should I do?

[wells101]

I can hear the chicks but there is no sign of hatching yet and they are a day late.

 

[FireTigeris]

Nothing yet, how did you count?

I count like this: Setting at hour zero-hour 24 is day one, day two starts hour 25 and ends hour 48...

Also if you temps were a little low they can be late developing and hatching. They have about 2-3 days extra yolk that will keep them feed and hydrated, after that... not so much.