Eclectus female has a new pure yellow feather on her neck

by Marilize
(South Africa)

Hi, We have a 3 year old female eclectus (subspecies unknown) which we bought 4 months ago. We are her 3rd owners. Just before switching to her 2nd owner, she had developed a stress-related (according to her previous owner) feather picking problem. She was put on anti-stress supplement up to the point we got her; however, we decided to take her off it as it seemed her plucking was more from lack-of-attention from her previous owners and also boredom (she had no toys and watched tv all day) than from anything else. We have also changed her diet to exclude pellets and contain a minimal amount of sunflower seeds.

Her feathers were growing back nicely once she got used to her new surroundings, but she plucked everything out again when we went away for a week; we then realised she is very bonded to me (as with her 2 previous female owners) and does not want me gone for more than a day at a time - now she is on holiday with us and not really plucking.

We are patient for her feathers to grow back; but with her latest bunch of feathers that surfaced, there is 1 bright yellow feather that has come out on her neck. All the other new feathers look normal and healthy. This has us a bit concerned... should we be worried? (we are currently trying to find an avian vet in our area)