I think I walked upon this moth during some intense pre-mating or egg laying ritual. It's tail end was curled out and it was vibrating ever so slightly. The thing that's so cool about this moth is that it looks like a piece of peeling birch tree bark close up, and had it been on the side of most any grey-ish tree it would be near impossible to spot it. Even it's fuzzy legs look like pollen or a seed casing, and are tinted brown on the inside creating a pretty good disguise.
In the pic below I have a pink arrow pointing to where I found it! Not the worst hiding spot, but I think there's better. ;)