I have 2 hens 2 years old, 3 pullets between 20-25 weeks old and a roo who is 16 weeks old. In 2 seperate brooders i have 3 silkies 15 weeks old, 4 bantam cochin 13 weeks old and 2 marans 10 weeks old. The chicks are all getting big and it's getting very crowded in the brooders so really need to move them in with the big lot, i know from reading here it say's to intergate when they are almost the same size but the silkies and cochins will never be the same size as they are bantams. The chicks brooders are within the coop and have been since the chicks were 5 weeks old so the big lot are used to seeing them but have never been loose together. How do i introduce the chicks and which chicks if not all? They really are lacking in space now and need moving asap.