By Glenn Collins
Tuesday, September 13, 2011 | 10:09 AM
For those of you who worried about Spirit, worry not. On his Twitter feed, Nova tells us that Spirit is fine. Nova writes, "Had a lot of people ask me about Spirit after Saturday's flight. The old bald guy is doing great...thank goodness he's hard-headed!!" On its Facebook, the Southeastern Raptor Center posted, "Thanks everyone for your concern regarding Spirit. Spirit is doing well and feisty as ever."