Not quite the right green

I noticed a small frog on a giant ragweed leaf a few days ago. It was not quite the right shade of green. From the information on the Indiana DNR website, it appears to be an eastern gray tree frog (Hyla versicolor). This little fellow can change color to match its background (at least if the background is gray, brown, or green). They are arboreal and nocturnal, so they may be fairly common even if they are not often seen.

 I saw another monarch butterfly a few days ago, and this time I was able to get a picture. I would have gotten a better picture if it had been more cooperative.