An inchworm is a fascinating critter to observe, as I recently discovered.
S/he would make its steady way up to a pine needle, nibble on it, and push it away. The hapless inchworm sometimes found itself upside down, looking remarkably like a puppy battling a particularly tough blade of grass.
A brief struggle to right itself, then on to the next tidbit: a bit of seed or bark or perhaps moss. Most items fared the same as the pine needles: thrust aside, sometimes spit out, discarded in favor of the next bite.
Ah, the endless interest to be found in watching the littlest beings among us!