No nightjars this time, but reader Mark Sturtevant sent a photo that has cryptic tree frogs in it. To wit:
I have placed two gray tree frogs (probably Hyla versicolor) on this tree trunk. Can your readers find them? For scale, the frogs are about 2 inches long from nose to rump, and the ridges on the bark are often about that wide. Here is a picture of what these look like.
They are very obliging at being placed on the tree pretty much wherever I want to stick them. And they do stick pretty well, given their tree froggy toes and generally sticky skin.
Okay, where are they? Answer later.