I've decided that my 5 hens have peaked in production and need to be swapped out for 5 fresh hens. I'll probably get the new chicks in Feb/March. You can look at my coop page to see my setup but basically it's a 4x8 coop and we let the hens free range all day in the backyard. I'll start the chicks in the brooder but need to decide whether to introduce the new hens to the existing flock when they're about 5-6 weeks old, or should I get rid of the 5 old hens first and then put the new ones out in the coop? The plus to integrating them for a short time is uninterrupted egg supply, but the downside is crowding and trying to feed start and grow to half the flock while feeding layer pellets to the other half. For those who have done this before, what's your advice.