Upside Down Eliza

A few months ago Eliza and Josh were supposed to be taking a nap at Nana's house, when Nana discovered the strangest phenomenon -- Eliza standing on her head in the crib, with her feet hooked over the railing!  Over the weeks that followed, we found her doing it quite frequently, but never (of course) when we snuck into her room with the camera.  I was starting to feel like some kind of a wildlife photographer, hunting the last of some endangered species.  But at last, at the beginning of this month, success!  (What a surprise that she finally cooperated for Daddy...)

Why does she do it?  Is she trying to escape?  Does she just like the feeling of the blood rushing to her head?  It's a mystery!  She's awfully adorable, though!