Milestone - Mirror

I read that babies at 6 weeks can see and recognize their reflection. Riley has seen the mirror over his swing, and seen the bathroom mirror from a few feet away. But tonight I held a little toy mirror up to his face, and he smiled at himself! A big, huge, open mouthed smile! It wasn't some quick accidental smile, he smiled off and on for about a minute. I wish I'd have had the camera!