Problems with Brahma Rooster pecking

[byouland]

I purchased four chickens that were three weeks old. Out of the four, I ended up with two roosters that are now almost four months old. One of the roosters is a Brahma who is not the head rooster of the flock. Because he is not the head rooster he seems to be going after my two hens a lot. Is this normal pecking behavior? So far we're going on almost 2 weeks of aggressive behavior. I've been online reading on this site that pecking is normal, and to only separate if there is blood involved. Is there a problem because I have two hens and two roosters?
Pictured below are the two roosters I have.

 

[PSJ]

Yes. That is a problem. The normal is about about 7 to 10 hens per ONE rooster. You'll probably end up having to get rid of one or build a rooster pen

 

[byouland]

Thank you. I ended up giving the Brahma rooster back where I purchased him. My flock seems much more happier

 

[PSJ]

Awesome!