Update: The Kineseology of getting Upright

DAD has carefully observed each of the New Family Twins pull themselves upright. While Buggy uses her arms to pull herself upright while pushing with her legs, as one would expect a child to do, Buddy pushes against his extended arms using his massive glutes and quads to get upright. He starts by reaching for a perch above his head. Then he locks his elbows and shoulders. Next he positions his feet underneath himself. Finally he pushes hard upward storing energy in his legs and rear much like compressing a spring. Once he has stored enough energy to bolt upright, he relaxes his deltoids and literally pops up to his own delight.

At some point he is going to figure out that it takes less energy to rise up using his arms to lift himself rather than as a cocking and trigger mechanism.

Update: Buddy continues to pull himself upright and now toddles between hand perches. He can, and has, made his way from the far end of the play-space to Dad's end using the fencing for support. This is not a fast or easy process for him and Dad is glad to see his determination.

♪ "Workin' my way back to you Dad!" ♪

Buggy can stand upright without holding onto anything for seconds at a time. She is learning how to balance and may take her first unassisted steps soon. Also, her coordination is a good proxy for her level of fatigue. A tired Buggy topples more easily than a fresh from a nap one.