Mixing 2 Different Barred Rock Chickens Flocks together

[caw009]

Does anyone know if you can take these young Barred Rock out of one group and mix with their own kind in another flock...if it is done at night?

 

[KatieBugg]

Even tho they may look alike, chickens have a pecking order and will know that there are newbies in the flock. You also need to Quarentine any new comers for 30 days, after that you can put the newbies where the current flock can see and hear them, ie such as in a confined area within the coop. Are the chickens all adults and are there any new roos in the bunch?

 

[Fred's Hens]

Merging flocks is stressful, irrespective of breed type. There'll be little to no advantage in having them both BRs.
Eventually, after some jostling and fighting, they do re-establish a new social order and life goes on.