I'm not sure if turkey vultures are bad omens or not. I enjoyed watching it settle on the roof and chill out for a bit before taking off. Apparently, turkey vultures are one of 7 species in the family Cathartidai, which includes the King Vulture of Brazil, and the Californian Condor.
Up close, it looks like this:
This is certainly the coolest thing I've seen at work yet. Nature is pretty awesome. I need a better camera.