It is very hot where I am (90s-100F) and it’s the middle of June! Yet some of my chickens seem to be molting. Some seem to be missing some feathers and I see a lot of down feathers in the run. My pullets are not molting only my older birds. I did find lice on my chickens however I treated them on Monday. We cleaned the entire coop ,except for the run, and covered the chickens in lice powder. Could the molting be from the stress of being powdered? Or are they just doing a weird molt because it’s so hot?All help is appreciated. Thank you.