We had a similar problem with 2 of our 6 hens losing feathers and having sores above the tail. Molting seems to be part of the problem.
Someone at our local feed store suggested switching from pellet to mash. Apparently they peck when bored, and by eating mash, it takes the hens longer to fill up.
Also, had a suggestion to apply blue vaseline (color with food dye)to the sore.
Any comments?
Also, if ticks and mites are present, what's the base way to treat the problem?
Thanks!