The Kererū is allegedly in gradual decline and quite indeed an impressive pigeon, with its acrobatic twirls, noisy flight, beautiful colors and big size. Their conservation status is NT (nearly threatened), according to Wikipedia and other New Zealand sources. Due its large size it is one of the only birds that can digest and thus distribute large seeds and drupes. This explains why I have so many premature plum trees scattered all over the bush. They live in pairs and like to occupy the same area.