Hungry wood pigeons are filling up Whangārei's Bird Recovery Centre as the kūkupa's food source dries up in the wild and they eat plants that are toxic to them.
Bird Recovery Centre boss Robert Webb said he normally got about 80 kūkupa (native wood pigeons, also known as kererū) in every year for a variety of ailments - including public drunkenness from eating fermenting berries - but this year was particularly bad.
Webb said in the last month he had 25 kererū dropped in to the Whangārei centre and another 10 in Kerikeri - and some of them were literally starving.
''August to September is traditionally when their food sources dry up and the next lot of berries haven't started yet. At this time of year all the fruit they eat has gone, such as guava, so they have to find something else to eat. And what they are eating isn't good for them,'' Webb said.
''They eat things like new leaves on tamarillos, but they are toxic to them. They are also eating the new buds on the kiwifruit orchards, which isn't a good idea either.''