on day 22 u are going to have to start cracking the shell for them because there wont be room for them to do it if u don't help them they will die.if u see blood stop and wait a little then help again then be careful when taking them out the yoke might be connected they can brake and then they will bleed to death
I have a little white leghorn pullet that lays for 2 days stops a day lays a double yolk stops for a day then lays single again for 2 days. This pattern has held for 4 weeks....I think my rooster is also maturing...you should see the size of these eggs!!! poor poor baby hen