How to prevent cockatiel from chewing wing feathers?
Cockatiel with chewed wing feathres
Hello, my cockatiel of 10 years just recently (within the last 4 months) started picking at his wing feathers in one specific area. During the first few months, he would allow them to grow back in, so I wasn't too worried. But now, he constantly preens that area on his wing to the point that there is now a small bald patch.
I've only noticed a tiny bit of dried blood in that area, likely from a blood feather he broke during his preening, but he's never broken any blood feathers resulting in serious bleeding. In this area, he now has what looks like a blood blister where a new flight feather is trying to grow in, which I'm sure he won't allow.
So, my question is, is there anything I can put on the bald area to prevent him from further chewing. I'm confident that once his feathers grow back in that area, he will stop, but as of right now he just can't leave it alone. I assume it all started when he broke a feather during flight in that area, and now it's become a bad habit to chew.
My cockatiel's diet has been always been consistent and healthy, he takes baths about once a week, and his cage is full of toys to keep him occupied. Are there any safe bitter ointments for birds on the market for obsessive chewing of this nature? Any suggestions on how to prevent this behavior will be greatly appreciated. Thanks in advance.
I have included one picture that shows the blister and bald area. The blister is that small dark brown bump near the top left of the bald spot(The picture was taken after he bathed in shallow dish so his a few feathers appear damp still)