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The Victoria crowned pigeon (''Goura victoria'') is a large, bluish-grey pigeon with elegant blue lace-like crests, maroon breast and red iris. It is part of a genus of three unique very large, ground-dwelling pigeons native to the New Guinea region. The bird may be easily recognized by the unique white tips on its crests and by its deep 'whooping' sounds made while calling.〔(VICTORIA CROWNED PIGEON – Calling and Displaying ). YouTube (2012-04-25). Retrieved on 2012-08-23.〕 Its name commemorates the British monarch Queen Victoria. ==Description== The Victoria crowned pigeon is a deep blue-gray color with a small black mask. Its feather crest (the signature feature of crowned pigeons other than their size) is conspicuously white-tipped. On the wing coverts, there is a row of feathers that are a paler blue-gray with maroon tips. These form a distinct wing bar. The chest is a deep purple-maroon color. As in all crowned pigeons, melanism has been observed. The other two crowned pigeons are somewhat superficially similar but only the western crowned pigeon overlaps in range with the Victoria species. The southern crowned pigeon does not. In the western species, the crown is more scraggly and hair-like, the chest is a uniform blue-gray and not maroon and there is a less distinct wing-bar. Both sexes are similar.〔 This species is typically long. Some specimens may exceed a length of and a weight of .〔(Victoria crowned pigeon ). Toronto Zoo. Retrieved on 2012-08-23.〕 It is marginally larger than the two other crowned pigeons on average and is thus considered the largest surviving species of pigeon of earth. The standard measurements among pigeons on mainland New Guinea are as follows: the wing chord is , the tail is , the bill is and the unfeathered tarsus is .〔David Gibbs, Eustace Barnes & John Cox. "A Guide to the Pigeons and Doves of the World". Yale University Press (2001), ISBN 0-300-07886-2.〕 Like other crowned pigeons, this species makes a loud clapping sound when it takes flight. The mating calls of this species are also similar to the other two species of crowned pigeon, consisting of a deep ''hoota-hoota-hoota-hoota-hoota'' sound. When defending their territories, these birds make a resounding ''whup-up, whup-up, whup-up'' call. Their contact call is a deep, muffled and rather human-like ''ummm'' or ''hmmm''.〔 There are two subspecies of the Victoria crowned pigeon, ''Goura victoria beccarii'' is found on the mainland of New Guinea. ''Goura victoria victoria'', the nominate race can be found on the islands of Yapen, Biak and Supiori. The nominate subspecies is markedly smaller, with a wing chord measurement of , with less robust legs and feet and darker overall plumage. The nominate has a sparser crest with black on the wing coverts and right above the tail.〔 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「Victoria crowned pigeon」の詳細全文を読む スポンサード リンク
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