Perhaps just an affliction

 The young Oriental Magpie Robin must have got into a fight or has an infection that caused the feathers round its eye to drop, and one eye was more affected than the other.

It had drawn my attention because it did not flee when I approached.  On first look I thought it was blind as it simply stood there watching my approach.

And there was no attempt to fly as it hopped about and away, landing clumsily too on a piece of rubble that was in its way.

And looking rather lost.

It's nevertheless still a gorgeous bird with its glossy back and wing feathers, so it is hoped that it would get over its affliction soon.