bn:01863279n
Noun Concept
Categories: Feathers, Articles with short description
EN
speculum feathers  speculum  speculum feather  wing-speculum  wing speculum
EN
The speculum is a patch, often distinctly coloured, on the secondary wing feathers, or remiges, of some birds. Wikipedia
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EN
The speculum is a patch, often distinctly coloured, on the secondary wing feathers, or remiges, of some birds. Wikipedia
The secondary feathers on the inner part of a duck's wing which are often brightly coloured Wikipedia Disambiguation
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