animal animals bird birds cockatoo Cockatoos colour colourful colours feathers fowl park parrot parrots zoo Australian cockatoos grass eaters pets seed eaters sulphur crested cockatoo white white cockatoo yellow feather mammal mammals Australia-wide Australian Australian-parrots Australian-pink-cockatoos common electricity eolophus-roseicapillus familiar friendly galah galahs grass-feeder gray grey iconic intelligent like-musical-scale lines observant observing perch perched perching pink-and-grey power-lines resting rose-breasted-cockatoo rose-pink roseate-cockatoo rosies score seed-eater social watchful watching widespread wild willock-cockatoos wires blue corellas demonstrative destructive docile flock garden pest grazing Noisy pet root eater show-off talker vocal yellow tail feathers pest