The study, in the journal Science, explains why the behaviour spread gradually across neighbourhoods. It joins a relatively short list of examples of animal “culture” — behaviour that is shared socially, among peers and between generations, rather than being instinctively hard-wired into a creature’s genes.
The latest study began when researchers shared a video
An international team of scientists revealed that cockatoos in suburban Sydney taught each other a cultural innovation: how to break into a rubbish bin to gather food.
Examples include blue tits breaking into the foil caps of milk bottles to gather cream, and whales learning songs from each other.