Glossy black-cockatoos prefer the fruits of ancient rocks, acidic soils 10/08/2024 FacebookTwitterEmail A glossy black-cockatoo feeding in a sheoak tree, which are preferred oif grown in poor, acidic soil. (Ian Buick) New research from the University of Adelaide has shown that glossy black-cockatoos prefer to feed from trees growing in acidic […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password