Mine were day 21 yesterday, nothing so far. not even a little pip. however #5 in there is screaming his little head off from INSIDE the egg! he kept me up all night and was still at it this morning, and when i just got home from school i could hear him from the other side of the house. ran to my room thinking chickys! nope. he's still inside his little egg. and screaming at me. how early on will they start chirping at you before hatching out????? none of the 5 i have in have done anything but chirp at me, and this little guy managed to move his egg about 90 degrees sideways, but that's it.