Are my birds racists?

[BBQJOE]

We picked out 7 RIR's and 3 Americaunas. They grew up together in a pen with 300 other 8-10 week old chicks.
We've had them getting close to a week now, and the RIR's are pounding the americaunas.
The reds chase them all over the place, won't let them eat or drink, and there's a lot of feather plucking.

Will they all grow out of this after some point? Or should I see if the guy will take them back and trade me for 3 more reds?

 

[donrae]

How much space do your birds have?

 

[BBQJOE]

How much space do your birds have?

Including the coop, 400 sqft

 

[FeelsGoodman]

I have a number of breeds and my 3 Rhodes are jerks

 

[BBQJOE]

I just talked to the guy that I got the birds from. he told me if he has any reds left, he'll trade out the americaunas.
He told me the red are very aggressive birds.
I don't know, but If I was him and knew it would be a bad mix, I would have deterred me.