This may sound like a stupid question but here it is. We have a 2year old TAG that we just got about 2 weeks ago from her previous owner that couldn't care for her anymore. She appeared to have her chest feathers plucked thin. She seems to be very happy, we are getting along great and the vet says she is healthy. I have not seen her doing more than normal pruning, So I don't think she is still plucking. My question is how long tell her feathers come back in?