What should macaw eyes look like?

[Savery]

I was looking at my baby (almost 3 months old) blue and gold macaw this weekend, and his eyes appear different than the other similar age babies. His eyes almost look like they have a blueish/grayish iris, while the others have darker eyes. There's another baby that has similar eyes, but not nearly as noticeable. His vision is good... when one of the employees walked in with a syringe he immediately knew what was going on. Is this normal, or a sign of something that may be wrong?

[kellywess]

Baby macaws all have dark eyes they start changing when they are around six months old or so. I would not worry, what you are noticing is quite normal.