New Zealand is home to a fascinating array of bird species, including several members of the pigeon and dove family that grace the skies and forests of this island nation. Among these, native species like the distinctive Kererū (New Zealand pigeon) stand out, while introduced species such as the Rock Pigeon and Spotted Dove have also established themselves across the country. Understanding these birds requires exploring their taxonomy, physical features, behavior, and conservation status—elements crucial for appreciating their role in New Zealand’s unique ecosystems.
Scientific Classification
Pigeons and doves belong to the family Columbidae, a diverse group of birds characterized by their stout bodies, short necks, and slender bills. Within New Zealand, the native pigeon species is the Kererū, scientifically known as Hemiphaga novaeseelandiae. This species is endemic to New Zealand, meaning it is found nowhere else in the wild. The genus Hemiphaga distinguishes the Kererū from other common pigeons worldwide. It is notable for its size and the iridescent green and purple plumage on its neck and upper body.
In contrast, introduced pigeon species include the Rock Pigeon (Columba livia), originally native to Europe, North Africa, and parts of Asia, which has been domesticated and later feral populations have spread globally, including New Zealand. The Spotted Dove (Streptopelia chinensis) is another introduced species, originally from Southeast Asia, now found in urban and suburban areas of New Zealand. These species belong to different genera within the Columbidae family and exhibit distinctive traits compared to the native Kererū.
Geographic Range & Distribution
The Kererū is widespread throughout New Zealand’s forests, from coastal regions to mountainous areas up to about 1,000 meters in elevation. It is most commonly found in native bush areas on both the North and South Islands, as well as on smaller offshore islands where forest cover remains intact. Historically, the Kererū occupied nearly all forested areas, but habitat loss and predation have influenced local populations.
The Rock Pigeon, introduced by European settlers, is now found primarily in urban and rural environments across New Zealand, especially in cities like Auckland, Wellington, and Christchurch. These pigeons thrive in human-altered landscapes, nesting on buildings, bridges, and other artificial structures. Their adaptability has allowed them to establish feral populations that are common in parks, farmland, and towns.
The Spotted Dove is less widespread but has become increasingly common in the northern parts of the North Island, particularly in suburban gardens and open woodlands. This species prefers warmer, temperate climates and is well adapted to human-modified environments. Overall, the distribution of these introduced doves and pigeons overlaps with urban centers and farmland, contrasting with the Kererū’s preference for native forest habitats.
Physical Description
The Kererū is one of the largest pigeons in the world, measuring approximately 50 to 55 centimeters in length and weighing between 550 and 850 grams. It boasts a striking plumage with a white underbelly and iridescent green and purple feathers on its head, neck, and upper wings. Its large size and distinctive coloration make it easily recognizable. The Kererū’s wingspan ranges from 70 to 85 centimeters, enabling powerful, sustained flight despite its bulky body.
The Rock Pigeon, commonly known as the feral pigeon, is smaller, typically measuring 32 to 37 centimeters long with a wingspan of 64 to 72 centimeters and weighing between 238 and 380 grams. Its plumage is highly variable due to domestication and feral breeding, but wild-type individuals have a slate grey body with two black wing bars, iridescent feathers around the neck, and a white rump. Urban pigeons often show a range of colors, including white, black, and various mottled patterns.
The Spotted Dove is smaller and more slender than the Kererū, measuring around 30 centimeters in length with a wingspan close to 45 centimeters and weighing about 150 grams. It is characterized by its pale brown body, pinkish underparts, and distinctive black-and-white spotted collar around the neck. This species has a more subtle and muted coloration compared to the vibrant Kererū but remains easily identifiable by its spotted markings and soft cooing call.
Behavior & Diet
The Kererū is known for its relatively slow and deliberate flight, producing deep wingbeats audible from a distance. It is a frugivore, primarily feeding on native fruits such as those from the miro (Prumnopitys ferruginea), tawa (Beilschmiedia tawa), and hinau (Elaeocarpus dentatus) trees. Its role as a seed disperser is crucial in maintaining New Zealand’s native forests because the Kererū is one of the few birds capable of swallowing large fruits whole and dispersing viable seeds across wide areas. It also consumes leaves, buds, and flowers on occasion.
Rock Pigeons have adapted to an omnivorous diet, feeding mainly on grains, seeds, and human food scraps. They are often seen foraging on pavements, in parks, and around farms where food is plentiful. Their ability to exploit urban environments and human waste has contributed significantly to their success as feral birds worldwide. They feed throughout the day and are highly social, often gathering in large flocks.
The Spotted Dove feeds primarily on small seeds and grains, supplemented by insects and other small invertebrates. It forages on the ground in open areas like gardens and farmland, often observed pecking through leaf litter. This species is shy but adapts well to human presence, frequently seen in suburban settings where food sources are available. The Spotted Dove is also known for its soft, rhythmic cooing calls, which are especially prominent during the breeding season. According to Audubon Society, this species is well documented.
Breeding & Reproduction
Breeding behavior in the Kererū involves elaborate courtship displays, including a distinctive “whooshing” sound created by its wings during flight. The species typically nests in tall native trees using a flimsy platform of twigs. Females usually lay one egg per breeding attempt, which both parents incubate for about 28 days. The chick, covered with downy feathers, is altricial and depends on parental care for several weeks before fledging. Kererū breed mainly from spring through early summer, though nesting can occur year-round depending on food availability. According to Cornell Lab of Ornithology, this species is well documented.
Rock Pigeons are prolific breeders, capable of nesting multiple times per year in urban and rural environments. Their nests are simple structures made from sticks, often situated on ledges, building eaves, or other sheltered spots. Clutches usually consist of two eggs, with both parents sharing incubation duties for approximately 17 to 19 days. Pigeon chicks, or squabs, are fed “pigeon milk,” a nutrient-rich secretion from the parents’ crop, before transitioning to solid food. Due to their rapid breeding cycle and adaptability, feral pigeons maintain high population numbers worldwide.
The Spotted Dove builds a delicate nest of twigs, typically placed in low shrubs, trees, or even man-made structures. The female lays two eggs per clutch, and incubation lasts around 13 to 15 days. Both parents participate in incubating the eggs and feeding the hatchlings. The chicks fledge within 14 to 16 days but remain dependent on their parents for some time afterward. This species breeds mostly during the warmer months but may breed year-round in favorable conditions.
Conservation Status
The Kererū is currently classified as “Near Threatened” by the International Union for Conservation of Nature (IUCN). While the species remains widespread, it faces ongoing threats from habitat loss due to deforestation and predation by introduced mammals such as possums, cats, and rats. Conservation efforts focus on predator control and habitat restoration to ensure the survival of this iconic native bird, which plays an essential ecological role in seed dispersal.
Rock Pigeons are not considered threatened globally or in New Zealand due to their vast and stable populations. Their adaptability to urban environments and prolific breeding habits sustain their numbers despite occasional control efforts in cities aiming to reduce nuisance populations.
The Spotted Dove is also not listed as threatened; in fact, it benefits from human-altered landscapes and is generally increasing in range within New Zealand. However, as an introduced species, it is important to monitor its impact on native biodiversity, particularly if it competes with native birds for resources.
Interesting Facts
The Kererū is often celebrated in Māori culture and folklore for its importance as a food source and its role in forest regeneration. Unlike many other pigeons worldwide, the Kererū is capable of swallowing large fruits whole, making it a vital agent for dispersing seeds of native trees and thus maintaining New Zealand’s unique forest ecosystems. Its loud wingbeats, heard as a “whoosh” during flight, are a familiar sound in native forests and serve as a warning of its presence.
Rock Pigeons have been associated with humans for thousands of years, originally domesticated for food, message carrying, and as pets. The feral pigeons seen today are descendants of escaped domestic birds. Their remarkable homing ability has made them famous as messenger pigeons in wartime and sporting events.
The Spotted Dove’s soft cooing call is distinctive and often described as soothing or melancholic. Its spotted neck collar is unique among doves in New Zealand, and its adaptability has allowed it to thrive in suburban gardens, where it often goes unnoticed by casual observers. Despite its introduced status, it adds to the rich avian diversity of New Zealand’s urban and rural environments.
Together, these pigeons and doves contribute to the rich tapestry of birdlife in New Zealand. From the native Kererū’s ecological importance to the introduced species’ adaptability, understanding these birds enhances appreciation for New Zealand’s natural heritage and the challenges involved in conserving its unique wildlife.
