File:Mãe-da-lua-gigante (Nyctibius grandis).jpg
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Summary
| Description |
English: It is the largest species in the family. It is between 45 and 57 centimeters long and weighs between 360 and 620 grams (Cohn-Haft, 2012). Its wingspan reaches 1 meter. It has an enormous mouth and differs from other species in the same family due to its whitish plumage.
According to Wetmore (1968), it presents two color phases, the gray phase and the brown phase. The adult is grayish in color, with spots and streaks of brown, white and brown in various tones. They are slightly barred, and speckled with gray and greyish brown. The wing covers are dark gray lined with brown. The primaries and secondaries are black, barred indistinctly with dull gray, with the outer edges marked strongly with white or grayish white. The tail has well-defined black edges and is heavily barred. The throat and neck are pale, ranging from pale beige to pale cinnamon, with fine barring and dark spots. Chest and flanks with spots and streaks in brown, brown, yellow, white, dark brown and matte black. The belly is whitish. The undertail feathers are white, with some grayish brown bars. The iris is dark brown or orange, the beak is brown, paler in the proximal portion of the commissure and darker at the distal tip, the tarsi and feet are yellow. Juveniles of the species have plumage similar to the adult, however they are paler on the head, back, chest and flanks with much reduced barring and darker colored spots. Its bizarre vocalization is often the source of legends and fears among the rural population. The nocturnal “roar” that residents of the Minas Gerais forest area attribute to the folkloric character known as caboclo d`água is probably of this type.Português: É a maior espécie da família. Possui entre 45 e 57 centímetros de comprimento e pesa entre 360 e 620 gramas (Cohn-Haft, 2012). Sua envergadura atinge 1 metro. Apresenta uma boca descomunal e difere de outras espécies da mesma família por sua plumagem esbranquiçada.
Segundo Wetmore (1968), apresenta duas fases de coloração, a fase cinza e a fase marrom. O adulto apresenta coloração acinzentada, com manchas e estrias de coloração parda, branca e marrom em vários tons. São ligeiramente barrados, e salpicado de cinza e marrom acinzentado. As coberteiras da asa apresentam coloração cinza escurecido forrada com marrom. As primárias e secundárias são pretas, barrado indistintamente com cinza fosco, com as bordas exteriores marcados fortemente com branco ou branco acinzentado. A cauda tem bordas pretas bem definidas e é fortemente barrada. A garganta e o pescoço são pálidos, variando de coloração bege pálido a canela pálido, com fino barrado e pontos escuros. Peito e flancos do peito com manchas e estrias nas cores marrons, pardas, amarelo, branco, marrom escuro e preto fosco. O ventre é esbranquiçado. As penas infracaudais são de coloração branca, com algumas barras de cor marrom acinzentada. A íris é castanha escura ou alaranjada, o bico é marrom, apresentando-se mais pálido na porção proximal da comissura e mais escuro na ponta distal, os tarsos e pés são amarelos. Os juvenis da espécie apresentam a plumagem semelhante ao adulto, entretanto são mais pálidos na cabeça, costas peito e flancos com barrado e manchas de cores mais escuras muito reduzidas. Sua vocalização bizarra muitas vezes é fonte de lendas e temores por parte da população rural. Provavelmente é dessa espécie o “rugido” noturno que os moradores da zona da mata mineira atribuem ao personagem folclórico conhecido como caboclo d`água. |
| Date | |
| Source | Own work |
| Author | Allissondias |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 13:59, 28 May 2018 | | 4,696 × 3,056 (6.01 MB) | Allissondias | User created page with UploadWizard |
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