control of introduced animals and birds has always been a contentious issue in NZ - some see Canadas as a winged marvel wonderous to see - some see them as a dirty great big feed scoffing pasture fouling flying rat - the fact is without any natural predation in NZ the numbers need to be controlled - lethal injection will probably apply to an egg pricking injection has been used for years - green lollies no I seriously doubt that - just to difficult to actually use on something like a canadian goose - one would need to get them taking some kind of preefeed first - just frought with problems - non target take would be a serious issue - my thoughts are with the farmers who have a flock of 300 land in their saved pasture - no get out and shoot - and besides they are not half bad eating - like hedgehogs mustelids cats possums rats and child biting dogs all need the bullet cure and we cannot be squeamish
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