Bird - Hawaiian Goose or Nene with goslings - British postcard

Postcard
• Picture / Image:  Hawaiian goose [or Nene] with goslings
• Publisher:  Alan Whittaker
• Postally used:  no
• Stamp:  n/a
• Postmark(s): n/a
• Sent to:  n/a
• Notes / condition: 

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Text from the free encyclopedia WIKIPEDIA may appear below to give a little background information (internal links may not  work) :

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The Nene, also known as Nene and Hawaiian Goose, (Branta sandvicensis) is a species of goose endemic to the Hawaiian Islands. The official bird of the state of Hawai?i, the Nene is exclusively found in the wild on the islands of Oahu,^[2] Maui, Kaua?i and Hawai?i.

The Hawaiian name Nene comes from its soft call.^[3] The species name sandvicensis refers to the Sandwich Islands, an old name for the Hawaiian Islands.^[4]

The Nene evolved from the Canada Goose (Branta canadensis), which most likely arrived on the Hawaiian islands about 500,000 years ago, shortly after the island of Hawai?i was formed. This ancestor is the progenitor of the Nene as well as the prehistoric Giant Hawai?i Goose^[5] and Nene-nui (Branta hylobadistes). The Nene-nui was larger than the Nene, varied from flightless to flighted depending on the individual, and inhabited the island of Maui. Similar fossil geese found on O?ahu and Kaua?i may be of the same species. The Giant Hawai?i Goose was restricted to the island of Hawai?i and measured 1.2 metres (3.9 ft) in length with a mass of 8.6 kilograms (19 lb), making it more than four times larger than the Nene. It is believed that the herbivorous Giant Hawai?i Goose occupied the same ecological niche as the goose-like ducks known as moa-nalo, which were not present on the Big Island.^[6] Based on mitochondrial DNA found in fossils, all Hawaiian geese, living and dead, are closely related to the Giant Canada Goose (B. c. maxima) and Dusky Canada Goose (B. c. occidentalis).^[5]

The Nene is a medium-sized goose at 41 centimetres (16 in) tall. Although they spend most of their time on the ground, they are capable of flight, with some individuals flying daily between nesting and feeding areas. Females have a mass of 1.525–2.56 kilograms (3.36–5.64 lb), while males average 1.695–3.05 kilograms (3.74–6.72 lb), 11% larger than females.^[7] Adult males have a black head and hindneck, buff cheeks and heavily furrowed neck.^[8] The neck has black and white diagonal stripes.^[8] Aside from being smaller, the female Nene is similar to the male in colouration. The adult's bill, legs and feet are black. It has soft feathers under its chin. Goslings resemble the male, but are a duller brown and with less demarcation between the colours of the head and neck, and striping and barring effects are much reduced. The bill, legs and feet are the same as for the adult.^[8] Its strong toes are padded and have reduced webbing, an adaptation that allows it to swiftly traverse rough terrain such as lava plains.^[9]

The Nene could at one time be found on the islands of Hawai?i, Maui, Kaho?olawe, Lana?i, Moloka?i, and Kaua?i. Today, its range is restricted to Hawai?i, Maui, Moloka?i, and Kaua?i. The Nene is an inhabitant of shrubland, grassland, coastal dunes, and lava plains, and related anthropogenic habitats such as pasture and golf courses from sea level to as much as 2,400 metres (7,900 ft).^[10] Some populations migrated between lowland breeding grounds and montane foraging areas.^[9]

The breeding season of the Nene, from August to April, is longer than that of any other goose;^[11] most eggs are laid between November and January.^[7] Unlike most other waterfowl, the Nene mates on land.^[8] Nests are built by females on a site of their choosing, in which one to five eggs are laid (average is three on Maui and Hawai?i, four on Kaua?i). Females incubate the eggs for 29 to 32 days, while the male acts as a sentry. Goslings are precocial, able to feed on their own; they remain with their parents until the following breeding season.^[7]

The Nene is a herbivore that will either graze or browse, depending on the availability of vegetation. Food items include the leaves, seeds, fruit, and flowers of grasses and shrubs.^[12]

The Nene is the world's rarest goose.^[13] It is believed that it once was common, with approximately 25,000 Hawaiian Geese living in Hawai?i when Captain James Cook arrived in 1778.^[8] However, hunting and introduced predators, such as Small Asian Mongooses, pigs, and cats, reduced the population to 30 birds by 1952.^[8] Nevertheless, this species breeds well in captivity, and has been successfully re-introduced; in 2004, it was estimated that there were 800 birds in the wild, as well as 1000 in wildfowl collections and zoos.^[8] However, there is some concern of inbreeding due to the small initial population of birds. The nature reserve WWT Slimbridge, in England, was instrumental in the successful breeding of Hawaiian Geese in captivity. Under the direction of the leading conservationist Peter Scott, it was bred back from the brink of extinction during the 1950s for later re-introduction into the wild in Hawai?i. There are still Hawaiian Geese at Slimbridge today. They can now be found in captivity in every WWT centre. Successful introductions include Haleakala and Pi?iholo ranches on Maui.^[14][15] Today, the Nene population stands at 2500 birds.

type=printed

animal subject=bird

period=post-war (1945-present)

postage condition=unposted

number of items=single

size=continental/ modern (150x100 mm)