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Flamingos apply natural make-up to look good and attract mates

By Nitsi
|
Google Oneindia News

Washington, Oct 26 (ANI): A new study has revealed that flamingos apply natural make-up to their feathers to look good and attract mates.he study by the Juan Amat, from the Estacion Biologica de Donana Spain, and colleagues, it is the first study to demonstrate that birds transfer the color pigments (carotenoids) from the secretions of their uropygial gland for cosmetic reasons.

The uropygial or preen gland is found in the majority of birds and is situated near the base of the tail.

There is evidence that the colour of feathers may change due to abrasion, photochemical change and staining, either accidental or deliberate. Some bird species modify the colour of their feathers by deliberately applying substances that are either produced by the birds themselves or from external sources.

Among the substances produced by birds are the secretions of the uropygial gland, which may be pigmented orange, red or yellow.

Amat and team studied seasonal variations in plumage colour in relation to courtship activity of the greater flamingo Phoenicopterus roseus in Spain.

They then looked for the pigments that may tinge the plumage both in the secretions of the uropygial gland and on the surface of feathers.

They also observed whether the birds displayed a specific behavior to acquire and maintain the coloration of their feathers.

Lastly, they compared the timing of cosmetic coloration with annual reproductive patterns-egg-laying specifically.

They found that the plumage of flamingos was more colourful during periods in which the birds were displaying in groups and faded during the rest of the year.

This fading occurred shortly after the birds started to breed. They also found evidence that the birds transferred carotenoids from their uropygial gland to their feathers by rubbing their head on their neck, breast and back feathers.

Because rubbing behaviour was much more frequent during periods when the birds were displaying in groups and the colour of the feathers faded after egg hatching, the authors believe that the primary function of cosmetic coloration in flamingos may be related to mate choice.

The study was published online in Behavioural Ecology and Sociobiology, a Springer journal. (ANI)

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