Black Silkie Bantam rooster fight!? need advice on first aid

[Tracy and the Girls]

Today i saw my silkies fighting. when i went to see them later - both of their combs and waddles were bloodied and ripped. They are about 20 weeks old - this is my first set of chicks so
I have never had to do first aid. The Black Silkie combs are "brainy-like" in shape.

thanks for the advice.

tracy