Purpose of one-eyed statue in Skyloft?
In Skyward Sword, there's a bird statue near the waterfall (it is the only one in that area) and it seems to be missing a red stone that use to be one of its eyes. This same statue seems to be looking at Skyloft during the day and at night it seems to be looking in the opposite direction.
At the beginning of the game a man tells you about the statue and that it has lost one of its eyes. Right now nobody is there And I still can't find any side quest that has to do with the statue.
What do I do with that statue?