I love digging through the abyssal pit of internet crazy because I get to find gems like this: The Mothman on Mars? Linked in the ‘article’ is a NASA Curiosity rover photo, Mastcam Right. SOL 194. Photo taken on 21 February 2013. The rock they are talking about as “mothman” is in the upper left corner – the triangular one casting a shadow (I added my own arrow).
I can’t see it, at all… I see a rock, that looks like a rock and probably flies like a rock. But you’ve got to love crazy anomaly hunting.