We never used to have them around here apart from an occasional pair in summer and instead had many small groups of black cokatoos but then people in there wisdom started to feed those white ones, because " its lovely to have them in your garden " because of this they stayed over winter and built up in numbers to now become a large flock that have destroyed both orchid crops including 100 yr old walut trees and many old native gums recently, also the black cockys have been driven out by competition for nest holes. The problem is they have a beak that never stops growing so for beak maintanence they have to constantly chew on something even if they are not hungry, as for your lemon tree sounds like they just like eating it, sorry.iamagoldenoldie2 said:The lemon tree my wife plated years ago has a new fruit , looked at it today lemons on the ground and these white things with yellow heads into what left, what does lemon cocky taste like ????