Thumb Sucking Update

We think we;ve identified M's first volitional, non-necessary to sustaining life, voluntarily repeatable action.  (They've got a page for that in most baby books, right?  That's a common milestone people look for, isn't it?)

She can get her fists up to (and often into) her mouth.

But sometimes she looks like she's trying to figure out exactly what the constituent parts of her hands are, and if there's  some better hand/mouth arrangement than the one she currently employs.

And, as a friend of mine pointed out, if one just shoves the whole fist into the mouth, one is bound to get the the thumb.