Black Spots on a Chicken Comb

Is it possible to add more photos of the causes of black spots on combs?
There are only 3 photos - 1 is an example of picking/peck marks, 1 is an example of fighting and 1 is an example of frostbite.
Having a better variety that shows examples of each "cause" may be helpful to others looking for information.

Thanks!

Unbelievably timely. I have a pullet littered in spots. Top possibilities are dirt or pecking (pecking order has been amped up lately). So well written, and gives me a springboard to start diagnosing.

Thank you for this helpful article

nice quick reference. great pictures

A great look for people who want some quick answers

Good article, lots of information.

Informative. Covers many causes.

Very well done

This article is easy to understand and goes into just enough detail about each potential cause. It is very useful for figuring out what might be going on when a chicken's comb develops black spots.

Great read and very helpful in determining differential diagnosis for proper treatment