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BoolQ / do penguins have feathers arising from the epidermis

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do penguins have feathers arising from the epidermis

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Contour feathers are not uniformly distributed on the skin of the bird except in some groups such as the penguins, ratites and screamers. In most birds the feathers grow from specific tracts of skin called pterylae; between the pterylae there are regions which are free of feathers called apterylae (or apteria). Filoplumes and down may arise from the apterylae. The arrangement of these feather tracts, pterylosis or pterylography, varies across bird families and has been used in the past as a means for determining the evolutionary relationships of bird families.

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task_id: 7530500b-9e74-5f58-aaf9-85f1e0276d20
task_key: default--validation--7530500b-9e74-5f58-aaf9-85f1e0276d20
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