Beaks turning black at the base?

[chickery]

Hey there: I hope someone here can help me because I don't have a clue what this could be. We have 12 Buff Orpington hens. They are 5 months old, and some are just beginning to lay. About half of them have developed black crusty spot at the base of their beak. One also has a small black spot on her comb, and one has a black spot on the bottom of her ear. They seem to be acting normal; eating and drinking. It has been extremely hot and humid here in Southern Alabama. They are free rangers. Picture attached.

 

[oldhenlikesdogs]

Looks like fowl pox which is transmitted by mosquitos, and will run it's course in 4-6 weeks.