I'll watch this webcam… nevermore.
This webcam was set up to document the transformation of Levi's Stadium, normally the home of the San Francisco 49ers, into a hockey arena for an NHL event. Nobody expected the shot to be videobombed by this juvenile raven*, cawing directly into the camera like he knows he's going to be on YouTube.
It could be part of a sophisticated viral marketing scheme for the new season of Game of Thrones. It could also be a prank by Baltimore Ravens fans, trying to sike out San Francisco well before the new season. Or, it could just be a dumb bird acting weird. But probably not, as ravens are quite intelligent.
*Raven, crow, jackdaw, etc...what do I look like, Unidan?