Australian breeding burrows control damage damaging danger destructive devastating digging ecosystem environmental erosion fauna feral invasive mammal mammalian pest pest pest control populated prolific rabbits reproductive spread threat uncontrollable widespread wild wildlife blue Cockatoos corellas demonstrative docile flock garden pest grazing Noisy pet root eater show-off talker vocal white yellow tail feathers beaks birds branches eucalyptus-tree gum-tree native tree animals butterfly caterpillar catirpel catirpeller chrysalis closeup crawl creep crop destroy eat entomophagous furry green hairy India insect krayker larva larvae leaf Lepidoptera macro moth moulting pattern pests phytophagous stemmata tubular worm yellow Blister beetle flower eating Lytta aenea macro.animal nature outside spider summer web garden gardening mollusc mollusk shell snail snails colour cricket grasshopper