I have 12 Marans chicks (mix of black, blue and buff black tail) that are about 3 weeks old that have been together in the brooder. Today I picked up 3 Blue Laced Red Wyandotte that are about 3/4 weeks old thinking I could put them all together but the 3 BLRW are quite a bit bigger and more feathered out than the Marans chicks even though they should be about the same age (give or take a week). Will they all be ok in the same brooder together? I'll be separating them when older for keeping the breeding separate but would make life simpler for the moment to have them together, just don't want the smaller Marans getting hurt. Thanks!