Apteryx oweniilittle spotted kiwi

Last updated:

Geographic Range

The little spotted kiwi is found on Kapiti Island and in remote forests of South Island (New Zealand)

Habitat

The little spotted kiwi lives in temperate, evergreen, broadleaf forests and shrublands. They are strictly terrestrial.

Physical Description

Reproduction

The little spotted kiwi mates in the early spring, mostly within the first few weeks of September. They nest in burrows on the forest floor, laying one to two egg clutches. The kiwi produces relatively few but large offspring, perhaps so that the well-developed chicks have the best possible chance to survive under bad conditions such as food shortage or unfavorable weather.

Behavior

Unlike most other birds, the little spotted kiwi senses its environment by sound and smell, rather than by sight. They are nocturnal forest dwellers, and they remain in a shelter burrow during daylight hours. Little spotted kiwis are dispersed in strongly territorial pairs, relying on calls to maintain their territory. They may maintain the same territorial pairs for years.

Communication and Perception

Food Habits

Kiwis are omnivorous, eating both invertebrates and the fruit from forest trees and shrubs. The little spotted kiwi finds food on the forest floor and by probing in the soil to the full depth of its bill. Earthworms, cockchafer beetle larvae, catepillars, cranefly larvae, and spiders are the most common food sources in the little spotted kiwi's diet. Fruit off the hinau tree is also commonly consumed. Annelids make up the largest percentage of the bird's diet.

Economic Importance for Humans: Positive

Little spotted kiwis are charismatic species, conservation efforts aimed at kiwis help to protect habitat that is critical to other species and important in ecotourism.

Economic Importance for Humans: Negative

Little spotted kiwi conservation efforts may impact logging operations, but ecosystem, research, and ecotourism benefits might be assumed to outweigh those negative effects.

Conservation Status

The little spotted kiwi is the most endangered of all the kiwi species. Human destruction of habitat by logging, predation, fire, disease, and the introduction of mammal species have all contributed to the decline of kiwi poulations. Efforts to preserve the kiwi include setting aside Kaptiti Island as a reserve. Captive breeding has also been attempted, but it isn't very successful. Captive breeding of the little spotted kiwi first began in the mid-1970's; however, it was not until 1989 that the first chick was successfully reared.

Other Comments

Little spotted kiwis have a unique way of raising their young. The male tends to the nest during the 70-day incubation period for about 21 hours a day. The female renews interest in the young after hatching, and both parents escort the chick at night for protection. Adult kiwis do not feed their young. After hatching, the chicks feed from the yolk sac in the egg for the first few days, and afterwards they probe the forest for food, independent of their parents ( except when the parents escort the chick for protection).

Contributors

Robert Naumann (author), University of Michigan-Ann Arbor.

Glossary

Australian

Living in Australia, New Zealand, Tasmania, New Guinea and associated islands.

World Map

acoustic

uses sound to communicate

bilateral symmetry

having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.

chemical

uses smells or other chemicals to communicate

ecotourism

humans benefit economically by promoting tourism that focuses on the appreciation of natural areas or animals. Ecotourism implies that there are existing programs that profit from the appreciation of natural areas or animals.

endothermic

animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestor; the fossil record does not distinguish these possibilities. Convergent in birds.

forest

forest biomes are dominated by trees, otherwise forest biomes can vary widely in amount of precipitation and seasonality.

iteroparous

offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).

motile

having the capacity to move from one place to another.

native range

the area in which the animal is naturally found, the region in which it is endemic.

oviparous

reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.

scrub forest

scrub forests develop in areas that experience dry seasons.

sexual

reproduction that includes combining the genetic contribution of two individuals, a male and a female

tactile

uses touch to communicate

visual

uses sight to communicate

References

Errol Fuller ed. 1990. Kiwis: A Monograph of the Family Apterygidae. SeTo Publishers, Auckland New Zealand.