I go with them being at least 3/4 the size of the older girls, then of course introduce them slowly.At what age would you put pullets in with a laying flock? I have 3 3.5 month old Legbar hens. One has a red comb and wattles going on, though they aren't full grown yet. They are slated to go into my laying Legbar pen but is 3.5 months old too young?
Deb