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Intoxicated Kererū: Birds Fall from Trees!
18 Sep
Summary
- Kererū pigeons can become intoxicated from fermented fruit.
- Intoxicated birds exhibit poor coordination and fall from trees.
- Predation by introduced mammals is a major threat to kererū.
The kererū, also known as the New Zealand pigeon, is gaining notoriety for a peculiar seasonal behavior: becoming intoxicated. These endemic birds consume ripe fruit, which can ferment in their crops, producing alcohol. This intoxication leads to impaired coordination and can result in birds falling from trees. Wildlife rescuers advise specific care for grounded, intoxicated birds, recommending warmth and quiet until professional help can be provided.
Kererū are widespread throughout New Zealand, inhabiting various forests, farmlands, and even urban areas. While the species is not currently threatened nationally, populations can decline locally due to introduced predators. Their diet consists of fruit, flowers, buds, and leaves, with ripe fruit being a favorite, initiating their 'drunken' episodes. Their role as seed dispersers is vital for New Zealand's forests.
Despite past habitat loss concerns, the primary threat to kererū today is predation by introduced mammals such as feral cats, stoats, possums, and ship rats. Nests are especially vulnerable. Collisions with human-made structures and illegal hunting also pose risks. Encouragingly, conservation efforts have led to population increases in areas where predator control is effective.
