A seed mix is NEVER a complete diet no matter what it says on the bag. She needs other foods in her diet for her to be healthy-check out out Cockatiel's diet/food and nutrition section for more info.I dont see any tracts and she is eating cockateil bird seed with all kinds of stuff in it not sure what it is called without looking I think it is complete cockateil diet
Oh I know...it's possible Laura. I know you were trying to rule it out. It's not as common as them plucking other areas though like their chest..I am not saying its feather plucking I am just trying to rule that out, I didn't think it was rare at all I have read of a few cases of cockatiels plucking feathers from underneath there wings
I doubt it would be mites because it's an even area and on both sides but it's possible..I just doubt it...True I would think chest would be more of an easier place to get at, could mites or something like that be ruled out?
Your right about genetics though I know with Minnie she does have some bald spots underneath her wings but not totally bald though just a little in one area.