weird ball on comb; left crater

[howdysarah]

I gently scraped at it and it just popped off. Any cause for concern?

 

[sourland]

Looks like a scabbed reaction to a peck mark. Comb looks good. I'd just keep an eye on her.

 

[rascal66]

I don't have enough knowledge on this sort of thing to offer any true insight. But the comb overall looks fairly healthy and I wouldn't be too worried. It looks like a sort of scab?

 

[Myrshine]

I agree, looks like an old scab