Comment by zoomablemind

I can assure you, should your baby daughter have stayed to grow at home, you'd have seen this same development. It comes from a natural drive to explore that all babies have. It's a constant adaptation to the environment, to parents, to new body, new everything.

As for the daycare factor, you could sure think of an equivalent 'beam' in your home. That could've been a chair, a something 'interesting' higher up, say, mommy's voice coming from above - anything!

Babies find the ways. Unless the home environment is devoid of attractions and baby is confined to safety of an infinite carpeted floor surrounded by soundproof glass. That's a sci-fi kind.