They are ferocious. And they tend to swarm together when they attack. This fellow, all alone like that, something was off.

European wasps....I'll have to check where they come from originally. Are we responsible,or were they a gift from Europe?

Just looked it up. Not exactly the same wasp. The eastern yellow jacket is native to North America. You Australians always do things bigger and more dramatically than anyone else:)) Apparently, in many parts of Australia the temperature doesn't go down low enough to kill them off in winter (as happens here). Consequently, you get super nests (Google says as large as a car!!) that are extremely dangerous and the insects are apparently even more aggressive than here.

That's what Google said, anyway.