When can I mix chicks with layers? overrun and need advice!

[Kotiya]

So we planned 50 broilers, then added 17 new layers (same day, same age). At one week, we've already separated those - 67 in the brooder meant a LOT of chicken poop. We have a tractor for the broilers and a smaller brooder.
We'll, low and behold, two of my previous layers are broody. We thought it was a fluke - they've been on and off nests (getting our hopes up for weeks). But we found a baby two days ago! Moved Momma to a dog crate inside the coop. Hate to keep her locked up, but will the other ladies or two roos bother them? Plus, what happens when Broody #2 hatches her own? I only have 1 dog crate!

We are absolutely overrun with chickens - not complaining! Just in over my head!

 

[squeakyballs]

The momma hen will beat up anyone who goes near her baby. Just make sure that the other chickens remember who she is and don't treat her like a new chicken now.

My broody hens share their babies, but I'm not sure if that is the case for everyone.