Either it was a coincidence all four times it occurred, or the hissing sound in the new Hero Factory game which happens whenever you change something while editing a Hero causes one of my parakeets to attack the other. O.o

It wasn't Hero Factory. It was music. If I pause my music, they attack each other. Then I turn it on again, and they stop, and go back to whatever they were doing. That's even weirder than the Hero Factory connection. O.o