I have three roos and 4 hens all losing a lot of tail feathers like crazy they are longtails..silver phoenix,sumatra and every day in their stalls I find 5 to 6 feathers all over the floor..they are eating well,drinking well don't seem sick and checked for mites and are clean they are just very fiesty..they get annoyed when they get picked up and the roo's in the single stalls are getting very annoyed and sort of pur and make noises they look like they are about to jump at me..are these signs of a feather molt they are 14 months old never had a molt..anything I can do to help them through it like feed, vitamins, anything? Thank you