I’ve been to a zoo that had cassowaries on display and we ending up staring at each other as it was quiet; I got the distinct impression that it was sizing me up as a potential snack.
@Wtfman abusegr has been writing stories about fluffies in Australia and how they (don’t) cope. My favourite story is the one about the butcher bird; you may know it better as a shrike.
EpicSubterfuge has a comic featuring a shrike, demonstrating what vicious little bastards the birds are.