We have had our hens for one year now (got them as chicks). They are losing feathers only on their lower back and under their tail (including the rosster). It seems to be getting worse, skin is pink and it looks as though new feathers are trying to come in but not very quickly. There has not been a loss in egg production at all as a matter of fact they have really picked it up and we are getting as many eggs as there are hens. Total flock is 11 hens and one rooster. I did not know if this could be a normal moult, didn;t know if they moult this time of the year, mites, mice, etc. - We feed them table scraps, scratch feed and the DuMor laying mash along with their grit. Any advice from those of you with more experience would be much appreciated. I really like my girls and the roo is actually really friendly as well and fathom something bad happening to them. Also - what is the proper rooster//hen ratio?