The Kiwi symbol began to be recognized internationally in 1906 when Kiwi Shoe Polish was launched in Melbourne by a man with a New Zealand born wife. The polish was widely marketed in Britain and the USA during World War I and later. By 1908, kiwis were appearing in numerous sporting, political, and other newspaper cartoons.
During the First World War, New Zealanders carved a giant kiwi on the chalk hill above Sling Camp in England. In Flanders during the war, the name “Kiwi” for New Zealand soldiers came into general use. By the Second World War, the Kiwi was synonymous with New Zealand Servicemen overseas. During the war, the Kiwi Concert Party toured many battle areas. The Kiwi (New Zealand Army) Football Team, which toured the British Isles, France and Germany in 1945-46, also enhanced the emblem’s popularity.
Today, New Zealanders overseas (and at home) are still invariably called “Kiwis”. The Kiwi is still closely associated with the Armed Forces. The New Zealand dollar is often referred to as the “Kiwi” and the kiwi fruit is known as a “Kiwi” in some countries. Kiwis feature in the coat of arms, crests and badges of many New Zealand cities, clubs and organizations.
The kiwi is a flightless, solitary, nocturnal bird found only in New Zealand. Named for their cry, kiwis are brownish or grayish in color and may be streaked or barred. They have small heads, hairlike plumage, minute wings, and no external tail. The bill is long and slender, with nostrils near the tip. Kiwis range from 1.25 to 4 kg (2.75 to 9.0 lb) in weight and from 45 to 84 cm (18 to 33 in) in length and stand up to 30 cm (1 ft) high. They inhabit humid forests or swamps, where they feed on insects, snails, berries, and especially earthworms. Recent experiments confirm that kiwis locate food by smell, which is unusual for birds. They lay one or two very large eggs, about 13 cm (5 in) in length and 400 g (14 oz) in weight, in a burrow, and the smaller male incubates them for about eleven weeks. The photograph to the below is that of a Kiwi. As I am sure you can tell, the Kiwi is not a piece of fruit. If you are still having trouble distinguishing between the two, read on for more help.

The New Zealand Kiwi
New Zealand's Indigenous Flightless Bird
The Kiwi, of the order Apterygiformes-Ratitae, occurs only in New Zealand.
Although primarily a bird of New Zealand's native forests, kiwis also live
in scrub and native grasslands. Because the kiwi is a semi nocturnal, secretive
bird, few New Zealanders have seen their national bird in the wild.
The kiwi is the sole survivor of an ancient order of birds including
the now extinct moas. A flightless bird about the size of a domestic fowl,
the kiwi has coarse, bristly, hair-like feathers. Females are larger than
males.
Kiwis grow to about the size of a chicken and weigh between three and
nine pounds. They have no tail and tiny two inch wings which for all practical
purposes, are useless. Despite its awkward appearance, a kiwi can actually
outrun a human and have managed to survive because of their alertness and
their sharp, three-toed feet, which enable them to kick and slash an enemy.
The kiwi’s long slender bill has nostrils at the lower end. Using its
excellent sense of smell and flexible bill, the kiwi feeds on worms, insects
and grubs, supplemented by leaves, berries and seeds. There are five kinds
of kiwi in New Zealand - three closely related Brown Kiwis, the Little
Spotted Kiwi and the Great Spotted Kiwi.
The main breeding period is from late winter to summer. Nests may be
in hollow logs, under tree roots, in natural holes or in burrows excavated
mainly by the male. Most clutches contain one or two eggs. Eggs are smooth
and colored ivory or greenish-white. Kiwi eggs are proportionately larger
compared to the size of the adult female than the eggs of any other bird.
An egg may reach one quarter of its mother’s weight. After the first egg
is laid, the male takes over incubation and nest maintenance. Incubation
takes about eleven weeks but if the female returns to lay another egg,
the male has to sit on the clutch for a much longer time. Leaving the nest
only occasionally, the male’s weight can decrease by up to one third. Pictures
of a Kiwi and it's egg, plus a unique opportunity to view 3 stages of a
Kiwi hatching can be found here.
The young kiwi emerges wearing shaggy adult plumage. The young chick
is not fed by the adult, but survives on a large reserve of yolk in its
belly. Gaining strength, the chick remains in the nest for six to ten days.
The young kiwi then leaves the burrow, and, accompanied by the male, begins
to search for food. Kiwis have been known to live up to twenty years.
Before the coming of the Maori, the kiwi had no predators. Although
the Maori valued kiwi feathers for making cloaks, the number of birds killed
by Maoris was probably insignificant. During the latter part of last century,
many thousands of kiwis were captured by Europeans for zoos, museums and
private collections. Bush clearing, introduced predators, opossum traps
and motor vehicles have all contributed to the reduction in the kiwi population.
However, the kiwi has fared markedly better than other flightless birds
such as the Kakapo and Takahe. As long as suitable habitat is set aside,
and the remaining kiwis are left undisturbed, the survival of this unique
bird should be assured.
Saving New Zealand’s national bird is a full time occupation. The kiwi
is canny, strong and stroppy, but it's vanishing from New Zealand at a
rate of 5.8 percent every year.