Spot on D'uccle Comb

[Guitarjimmy]

This D'Uccle roo was a gift to celebrate my introduction into the chickens. Today I went out to check on everyone and noticed the spot. What could it be and what can I do? Thank you.

 

[Veer67]

It looks like dry fowl pox here's a link that should help: https://www.backyardchickens.com/t/690442/is-this-fowl-pox

 

[Guitarjimmy]

Thank you so much.