You know those arctic terns that dive at your head and make you run, run, run? Sweet things, really. Very aggressive, though.
Don’t see it? That’s why you have to watch your step! Here you go:
And that’s why they dive at your head!
They go right for your scalp, screaming. The trick is not to duck but to hold a stick above your head, the Icelander’s say, which is fine and beautiful advice …
… in a land without trees. I think this is why rams have horns. Just a guess.