New chick owners here. We have 12 chicks that we bought at about a week old, they are currently 3 1/2 weeks old. We have 1 Buff Orpington, 3 Ameracaunas, 3 Black Stars, and 5 Buff Cochins. The BO was the first to be our "friend" and will come right out of the brooder and sit on our arms or lap. The other have slowly come along, most recently 2 of the 3 Black Stars. But, for the life of me, we can not get the 5 Buff Cochins to be ok with us holding them or even touching them - they practically scream and then run away. I have read the Buff Cochins usually are very friendly, so what gives with these 5? They will run over and take meal worms from our hands, but still run away and peep very loudly if we try to do anything else. ANy suggestions?