Sleeping Babies

Three years ago we started the tradition of a winter trip staying in a cabin with both sets of grandmas and grandpas.  The trips always involve at least one winter walk and the littlest baby always seems to fall asleep.

Can you figure out which is baby Adam from 2010 and which is baby Eli?

(Eli is the top photo and Adam is the bottom photo- I know they don't look that much a like)