My experience goes back over 40 years dealing w/ feather problems. Many can be "worked with" and helped to some degree depending on how long it's been, some clear up entirely others have had follicles atrify and will never regenerate a new feather. My backgroung w/ the avian endocrine system is basically what I've picked up over the years through AAV seminar presentations, Dr Greg Harrisons Avian Medicine book, and personal conversations w/ vets. I've read about photoperiods and recommend it for some things but it seems to be an easy answer for nearly all problems, especially for animal behaviorists. Sorry I don't agree. I'm in a position that I deal w/ birds and people w/ their birds all day every day for the past 24 years. Many of my opinions are vastly different than what you'll see in BIRD TALK or on the internet, but I'll stand behind everything. To provide you w/ a link to prove that photoperiod manipulation doesn't work doesn't make sense. It's fine in some cases but I feel it's an easy answer for most people, and in my experience rarely helps what people are having problems with. Stimulating or decreasing breeding is what it seems to be best suited for. In most feather mutilation cases I suggest more full spectrum lighting( w/ a CRI over 90 ) than to reduce lighting. I usually suggest first seeing a vet to rule out any health issues, improved lighting, increased bathing, and lots of fresh green natural branches, then any other stimulating things added to their environment. One also needs to educate bird owners not to reinforce the behavior of feather destroying, which most people train the bird to do.
If you've had about a 50% success rate not bad, probably about par.





