I had a 3-4 month old pair, but the pullet stuck her head thru the fence and got trampled by the other chickens, breaking her neck.
I also had 3 youngsters, about 2-3 months. One was grabbed by a hawk, and then my favorite little pullet went into the stall to scavenge feed dropped by my donkey and got stepped on.
My remaining two are on lockdown, I'm waiting to see if the last little one is a hen or roo.
I'm going to end up buying an incubator this year, and look for some hatching eggs.
I'm sorry about your losses.