Now that we have his failing liver and recurring infections (AND the arthritis) mostly under control, my geriatric cockatiel is presenting with a new and mysterious affliction. The masses (lumps? clumps?) are on his back, where his wing is usually over the area. They're hard and white like chalk...

When I first got this feathered gentleman I thought he was a white face lutino. After I got him home and got him in better light I realized he does not have red eyes. At first I thought they were just very dark but shining a light in them produced no red whatsoever. I then noticed he really was...