The redder the male, the more successful it is.

redbird

According to Joseph Corbo, an associate professor of pathology and immunology at Washington University, the genes affecting red coloration belong to a wider family of genes involved in detoxification. Redness may be a sign of a robust, quality mate who can easily cleanse harmful substances from his body.

“In many bird species, the redder the male, the more successful it is at finding mates,” – Joseph Corbo.

For more see http://www.deccanchronicle.com/science/science/200516/researchers-solve-mystery-of-red-colour-in-birds.html

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