Let it roll, baby, roll.

So there we were, watching television on the couch, with Nico playing on his mat on the floor, lying on his back and kicking things, grabbing things, and trying to get toys into his mouth. He's been able to lift his feet straight up in the air for awhile now, and would roll onto his side (at a sort of "three-quarters" position still somewhat on his back, but angled sideways with his hips) to get at things.

We didn't see it happen, only suddenly there was our son, on his stomach, looking up at us in the way that he does.

After some cheering, we put him back on his back, and encouraged him ...

( Video footage. )