My DS7 didn't walk until he was 14 months old and then ran two weeks later. My DD4 took steps at 14.5 months and didn't really walk until 16 months. I used to think he practiced in his crib when no one was walking.

My impression is that walking is part of a completely different skill set from cognitive giftedness.

The reading, colors, and comprehension sound giftie-oriented to me!

Val