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By By (author) J.Matthias Starck

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Extra resources for Comparative Anatomy of the External and Middle Ear of Palaeognathous Birds

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Feeding and habits are similar to those of the other cassowary species. Its call is described as a harsh "heugh-heugh" and a deep, booming sound (Beehler et al. 1986). 5 Kiwi The three species, the brown kiwi (Apteryx australis), the little spotted kiwi (A. owenii), and the great spotted kiwi (A. haastii) are of relatively small body size (males 1500 g, females 2500 g; see Fig. 2E). Kiwis are flightless birds with extremely reduced wings. The kiwi is well known for its adaptation to nocturnal and crepuscular life.

The supraoccipital bone also contributes to the ossification of the canalicular part but has no direct share in the ossification of the tympanic region in the hatchling. In later stages of development, the posterior tympanic recess pneumatizes the supraoccipital bone and establishes a connection between the supraoccipital bone and the tympanic cavity. The occipital wall of the tympanic cavity is built from parts of the metotic cartilage (cartilago metotica). Its ossification extends from the exoccipital bone.

It is densely covered by feathers. The structure of these feathers resembles those of the other feathers of the head. Like the cassowary, the kiwi has no distinct feather tracts and it is not possible to describe an anterior or posterior auricular tract. The feathers of the kiwi are peculiar in that their proximal and distal bar buies are elongated, forming long "hair-like" filaments that do not hook into each other. Thus, the feathers appear plumaceous although they are actually contour feathers.

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