They have been laying for around 3 weeks. The first fresh eggs I cracked open weren't fertile, as soon as I started seeing bullseyes on the yolks I started saving them. I put my last Blue Laced Red Wyandotte in with my Cochins the other day, so there's a slim chance an egg or two might be hers.Welcome!
Congratulations on your hatches!
How long have your pullets been laying?
I set some of mine earlier this month and none developed, but they were brand new layers. I threw another one in the incubator a few days ago just as a last ditch effort, and looks like it is doing something (3 days, hard to tell for sure).
Love to hear how yours do!