Rescued Abused Macaw...Please answer a few questions for me. ;)?

Now he might not like it at first but it sounds like to me that the bird hasn't had a good spray with the water bottle.....get a spray bottle and put it about half way between a mist and stream.....if he has had this done before it won't startle him....even if he tries to evade the water spray him...it might take a couple of times but he will soon come to love it...I have a pair of wild caught Yellow Napes, at first they were scared of the spray...as soon as they got used to it they loved it...when they see me with my spray bottle they hang from the tops of their cages with their wings down much like a cockatiel does......also give him plenty of black oiler sunflower seeds (one heaping tbs a day)....they will help his new feathers as they come in...the old feathers are what they are...once they are grown completely in there isn't much you can do other than to give baths..........