Just beyond the boundary's edge, a cockatoo flew into the hole in a eucalyptus tree where it is nesting. Beyond that, the Swan River flowed. Galahs, chests as pink as those any number of Englishmen will be sporting in a couple of weeks' time, snuffled on the grass. Other birds flitted around the park, even those with less eye-catching plumage sporting eye-catching names: black-faced cuckooshrikes; willie-wagtails. Um, ducks.
"I think more and more we are really understanding the extent to which social behavior influences animals' lives," says Adelaide Abraham, a PhD student at the University of Oxford and first author of the study. "It's hugely, hugely important."