What Am I? Or Can You See Me?

The other day I was out in a very still woods, just walking quietly on a marvelous, soft trail made by my husband and son. I heard leaves crunching, a slight scurrying, a humming/grunting sound…

Then, once the little hummer noticed me, he ran for his hidey-hole. Can you see him? Can you identify him?

What Am I? Or Can You See Me?