Or MothMan!
I’d give more credence to the Thunderbird as a mythic representation or symbol which attempts to explain something:
http://en.wikipedia.org/wiki/Thunderbird_(mythology)
Mothman seems to be a modern psychological product without much meaning at all except an expression of fear; lots of nocturnal predators have reflective eyes that show red in the night - those young people in WV probably saw a Great Horned Owl. But it’s a fascinating fireside tale, especially as told by John Keel (taken with a big lump of salt):
http://en.wikipedia.org/wiki/Mothman