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The sensory bias of females to select for males with brighter wings has yet to be studied in Ornithoptera. Gyanandromorphism is a very rare condition in which an organism simultaneously expresses both male and female phenotypes. It is only observed in species that express strong sexual dimorphism.
The skeleton of a bird wing. Places of attachment of various groups of flight feathers are indicated. The mute swan with outstretched wings Wing of the white-tailed eagle. Bird wings are a paired forelimb in birds. The wings give the birds the ability to fly, creating lift. Terrestrial flightless birds have reduced wings or none at all (for ...
The speculum is a patch, often distinctly coloured, on the secondary wing feathers, or remiges, of some birds. Examples of the colour(s) of the speculum in a number of ducks are: Common teal and green-winged teal: Iridescent green edged with buff. [1] Blue-winged teal: Iridescent green. [2] The species' common name comes from the sky-blue wing ...
Video of gulls, ducks, and swans feeding on the Danube River in Vienna (2014) A water bird, alternatively waterbird or aquatic bird, is a bird that lives on or around water. In some definitions, the term water bird is especially applied to birds in freshwater ecosystems, although others make no distinction from seabirds that inhabit marine ...
Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which includes over 170 species of waterfowl, among them the ducks, geese, and swans. Most modern species in the ...
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The female has brown wings with white markings arranged as two rows of chevrons. The hindwings are brown with a submarginal line of centred yellow triangles. The body is cream coloured and there is a small section of red fur on the brown thorax. Male: There is sexual dimorphism in this species. The wings are long with angular apices.
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