Hi. Thank you very much for your information & suggestions. It has been raining quite a bit here lately but it's suppose to clear up by Thursday so
I will try putting the two in together in an outside pen on that day. The 'timid' one of the bunch so far has been the Australorp. The Buff seems to be the 'boss'
which is confusing because I heard that they are suppose to be good mothers but her and one of the 3 RIR's are the aggressive ones towards the little Ameracauna chick.
The only 'chickie treats' that I have learned about are hanging a piece of cabbage
or peeled & cored apples. I have been giving them mealworms also. They love those!  

 How many times & how often should I give them treats?