краснохвостые черные какаду едят плоды мелии ацедарах

Redtailed black cockatoos eating drupes (hard berrylike things) and tearing branches off from a cape lilac tree in Perth, Western Australia. Not normally seen in the city, these endangered birds are suffering from a loss of habitat in the bush. They are very noisy and flocks of them can strip trees like this almost bare but what options do they have in WA