Hello everyone! Currently I have a small flock of 4 pullets. They just turned 21 weeks today. 2/25 I will receive 4 more day olds. I get that I will have to have them seperated until they are big enough to defend themselves against my older birds. But should I just keep them seperated and have two small flocks, or slowly intergrate them with eachother when they are of age. Thank you!