At roughly 3:30 into this video, something, possibly a bird, seems to strike this luminous object and then drop away at a 45 degree angle. The video is authentic, and, I might comment, similar to many orb videos I have seen involving jet contrails. Orbs appear around these contrails too often for comfort. There would seem to be some connection.

Story Source:
http://www.youtube.com/watch?v=zxnaC_f5yIw