hello. During a particularly horrible, rainy, misty day at the end of June, i noticed a strange looking bird hanging off my bird feeder. I called my OH who looked through binoculars (his eyesight is terrible), said it looked like a woodpecker !! i said don't be silly, there aren't any of those here. anyway, we googled it and it was. it came to feed for a day or so, then disappeared as quickly as it arrived. Do they migrate ??