You may want to check them more carefully. They may be stuck and need a little assistance. If they are stuck and they don't get help, they will die.If my (shipped) silkie eggs were due to hatch the 21st and 5 of 14 have hatched (1 on the 20th & 4 on the 21st) but I see 2 eggs with beaks sticking out and peeping ( they have not advanced since last night)...When should I worry?