ducks have red spot with feathers missing could this be from peeking?

[chris328]

Hi
2 out of my 4 ducks have red bald spots .can this be from pecking ? what can i do to treat this if anything
thank you for help

 

[spish]

could be from pecking, could also be lice/mites. have you looked to see if they have bugs crawling on their skin?

 

[chris328]

how do you treat this?