Monday Maine Mystery Answered
More about that High Mountain Mystery Substance

High Mountain Tanager, Frog and Mystery

Here's a Friday challenge for you.

The three photos below are of a Scarlet Tanager, and a Green Frog, and a mystery substance.

Which is which, and what is that weird mystery substance?  (The weird substance  is a little confusing because someone on a mountain bike rode over it.)

Sorry about the tanager -- didn't bring along the right camera.