Why does my roosters comb look weird

[Samantha18232519]

So I'm totally new to this who chicken raising. I have a very small flock a mixture of bantams too. My little fellow has developed a sad looking comb I call it. I recently just gave 3 roosters away because they seemed to be getting rough with the others. Does any one have any clue why his comb is this way? Thanks in advance.

 

[sassysarah]

Looks like he has a little infection. You might want to put some antibiotic on his Comb

 

[Samantha18232519]

Looks like he has a little infection. You might want to put some antibiotic on his Comb

Thank you very much. Is there a certain type I should buy?