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The Ino budgerigar mutation is one of approximately 30 mutations affecting the colour of budgerigars. It is the underlying mutation of the Albino and Lutino varieties and, with Cinnamon, a constituent mutation of the Lacewing variety. == Appearance 〔 〕== In the green series the Ino is known as the Lutino, with pure yellow contour feathers, white or pale yellow flight feathers and tail feathers and silvery-white cheek patches. In some lights the body can show a very pale green sheen.〔Watmough, W (1951) p48〕 In the blue series the Ino is known as the Albino, and is pure white throughout. The cheek patches are almost the same colour as the body, but slightly more silvery. In some lights the body can show a very pale blue sheen.〔 The eyes of both the Lutino and Albino are red at all ages with white irides when adult, the beak is orange and the feet and legs are pink. The cere of an adult Ino cock is greyish-purple rather than blue. The World Budgerigar Organisation has established precise standards for some budgerigar body colours using the Pantone Codes, as shown to the right for the Lutino. The Ino mutation also induces changes in the nestling. The down is white rather than grey and appears only sparsely, never growing down the centre of the back. As the feathers appear, those down the spine and along the ventral centre line are late to develop. The Ino gene masks the effect of virtually all other mutations, including Opaline, Dark, Dominant Grey, Dilute, and Clearwing. These genes, when present in an Ino in either heterozygous or homozygous form, cause no change in the appearance of the Ino. But the Ino gene does not entirely mask Cinnamon. 〔 〕 A Cinnamon Ino, usually called a Lacewing, has pale brown or fawn spots, tail and wing markings.〔 These markings are quite clear, but considerably fainter than the markings of a normal Cinnamon. The Dark-eyed Clear has a similar body colour to the Ino, but has solid reddish-purple eyes without a white iris. Cinnamon Dilute German Fallows, NSL Inos and Inos are all very similar and difficult to distinguish from each other, but the first two are so uncommon difficulties arise rarely in practice. File:Melopsittacus undulatus -albino in cage-3.jpg|Albino hen File:Melopsittacus undulatus - albino and lutino.jpg|Albino hen and Lutino cock File:White domesticated budgerigar.jpg|Albino cock == Historical notes 〔== The first known reference to the Ino mutation in the budgerigar was a report by Mr L van der Snickt, a Belgian fancier, in the German avicultural paper ''Die Gefiederte Welt'' (''The Feathered World'') in 1879. He wrote that he had seen that year nine Lutinos, all hens. (In fact, he called them Albinos, since the name Lutino did not then exist, but from his description and the fact that the Blue mutation was not established until the 1880s it is clear they were Lutinos.) One breeder of these birds was Mr Kessels, also of Belgium, who in 1881 bred 25 Lutinos, all hens. A coloured picture of a Lutino appeared in the Brussels journal, ''Acclimatation Illustrée'', in 1882, and it is thought they were being bred in the Netherlands around 1885, while in England Mr C P Arthur of Melksham in Wiltshire bred what he believed was a pair of Inos around 1887. 〔 〕 After the 1880s no mention seems to have been made in the press of Inos until the 1930s, when interest in budgerigar mutations suddenly increased. In 1930/31, Lutino hens were owned by both Capt H S Stokes of Longdon, near Rugeley in Staffordshire, and Mrs Huntington of Warwick. In August 1932 Mr F J Mullis of Horsham, Sussex, bred an Albino hen. 〔〔 〕〔Watmough (1951) p 47〕 None of these led to an established strain. In September 1931, Mr E Böhm of Bawerk in Germany bred,〔 as the last of nine young from a pair of Cobalt〔 split Dilutes, 〔 〕 a snow-white red-eyed hen 〔 〕 - the first recorded Albino. Almost exactly a year later, on 12 September 1932, a second Albino hen was bred by Mr Fischer of Honow〔〔〔 in Germany from a pair of Skyblues. Both of these strains were established by the original breeders and also by others who acquired early stock from them, in particular by Kurt Kokemüller of Arnum über Hanover, and Mr Schrapel, also of Hanover, who performed together the first genetic investigations〔 into the Ino mutation and published the first correct pairing expectations in the German publication ''Der Wellensittich'' (''The Budgerigar'') in November and December 1933.〔 A third appearance of the Ino mutation occurred in Germany around 1933, when Mr Kuhlewein bred a Lutino〔 hen in an uncontrolled breeding flight. 〔 〕 This strain was also established. Other Ino mutations also appeared in Europe in the early 1930s, and several British fanciers, including Walter Higham,〔 Scott and Camplin, and Tod Boyd, had imported continental Lutinos by the mid-1930s. 〔 〕 Some of these turned out to be of the non-sex-linked type〔 and the unwitting mixing of the two mutations led to considerable confusion.〔 All British Inos seem to have descended from these imported continental Inos. In 1976, Dr T Daniels began a controlled programme of pairings to produce a Cinnamon Ino by deliberately crossing Cinnamons to Inos, and to estimate the cross-over value between these two mutations. The first Cinnamon Ino was produced in late 1979 and was identical in appearance to a Lacewing.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ino budgerigar mutation」の詳細全文を読む スポンサード リンク
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