Congratulations! I don't have my own Slow Whites this year... my only rooster (yes, I DO know better... sigh) got taken out by something that was big enough to break off three fence posts, but NOT- apparently- big enough to carry an 18# roo away. And then I lost EVERY cockerel in the pen of Slow White and Americauna chicks when we got a heat wave. I've never lost chickens to heat. And I can't explain to this day why only the cockerels would have died... and why the rest never showed any overt signs of heat stress!!
Fortunately, in the eggs my youngest son and his wife hatched in my incubator (it's fun to watch them learning everything we did 30 years ago!) there was one pure Slow White cockerel. Unfortunately, he's apparently mean... but that means I'm getting him! I'll solve the "mean" problem quickly enough, I suspect. I've never seen a mean Slow White before.
With the prices increasing almost weekly (it seems) on mail-order chicks, I'm rethinking (again) giving up on the wonderful- but increasingly expensive- CornishX birds, and hatching all my own Slow Whites. I'll have to do some real pencil pushing... see if keeping enough extra hens (and possibly a couple extra roos) over the winter to provide fertile hatching rates would be any- much- cheaper than buying chicks. I THINK so... but I don't know. If it does look cheaper, I will consider investing in a decent quality incubator, and possibly think about expanding the flock enough to sell hatched chicks locally. A lot of folks are starting to have trouble paying $2 a chick or more for meat chicks, especially with the cost of grain to raise them...
Summerthyme