Search results for query: *

A good guide is to make sure that the flocks that you are combining are within 30% or so of each other's size.

I would not do that to young chicks. They do not have enough experience to avoid being killed. At the very least, separate or divide the brooder. 4 weeks won't be a big issue once they are 12 weeks old. The 28 day chicks should be ready to move to a big house now.