goffi cockatoo not eating with asma & plucking feathers

Question
i offer to take care for a goffin cookatoo for a senior citizen who can no longer take care of the pet. it seem healthy but is not eating, it just play or toss the food i try many different kinds of food but no results when it breaths you can heard a wheezing like ahsma and is begining to pluck some of its feathers we play a lot with it and she seems like a bundle of energy, have plenty of toys and attention ,she jumps as a rabbit and seems happy i beging treatment just in case for vitamins in water and a generic pill for respiratory disease and intestinal virus but i plan to take her to the vet on saturday but its lack of appetite have concern.other than that seems happy it love to be hug or pet for hours it play soccer and seems alll excited and it really seems happy; and i have seen a good improvement in the ahsma a day after the medicine treatment, do you think this is serius or is normal due to recent home change i have it for 3 days  and is about 7 years old. any help will really be apreciated

Answer
HELLO NIXON
YOUR SMART TO GET HER TO A AN AVAIRY VET TO BE CARED FOR.  I NEVER HEARD OF A BIRD WITH ASMA OR BREATHING PROBLEMS.  I WOULD NOT PUT ANYTHING INTO A BIRDS WATER, IT MUST DRINK AND WITH PILLS OR MEDS IN IT THE BIRD WILL NOT EVEN DRINK.
FEATHER PLUCKING IS BAD AND MOST HARD TO STOP ONCE IT STARTS.  SPRAYING THE AREA WITH BITTER APPLE SOMETIMES STOPS, BUT USUALLY THE BIRD HAS A REASON TO DO THIS EITHER FRUSTRATION, LONLINESS, BOREDOM, ETC.
PLAY A RADIO THEY LOVE MUSIC AND GET HER TO A VET.  DO NOT PUT ANYTHING DIFFERENT IN HER FOOD.  TRY SOME STRAIGHT BLACK SUN FLOWER SEEDS PLAIN AND SEE IF SHE EATS THOSE FOR A START, THEN START ON A FRUIT MIX OF SEED.

KIND REGARDS
PATT