These swans remind me of the gargoyles in Ghostbusters. The city is possessed by ghosts on the loose, and the swans climb off their lamp posts and run around chasing people with their beady red eyes. Swans are mean in real life, imagine how scary they'd be in a zombie flick. Maybe its because I just saw that movie Black Swan, she was a bit scary towards the end there when her eyes turned red and she had developed a taste for carnage. City of Perth killer zombie swans... somebody make the movie please. I'll go see it.