"Bird colouration has also been intensively and extensively studied for a long time, " says Dr Galvan.

BBC: Earth News - Birds unveil 'silver wings'

"Sheen feathers may represent an alternative way to become more colourful and conspicuous, " says Dr Galvan.

BBC: Earth News - Birds unveil 'silver wings'

"What is really a surprise is how fragile this structure is, " explains Dr Galvan.

BBC: Earth News - Birds unveil 'silver wings'

Runner-up Cuba's Jorge Valcarcel, and third-placed Matteo Galvan of Italy, both ran personal bests.

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"This is how the sheen colouration is generated, without the occurrence of coherent scattering like in 'traditional' structural feathers, " says Dr Galvan.

BBC: Earth News - Birds unveil 'silver wings'

Both she and Galvan requested legal protection in making their confessions.

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With Wii tennis, "it's so hard for you not to move and simulate your tennis strokes, " said Antonio Galvan, a program manager at an Erickson facility in Naperville, Ill.

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The confession document was presented at a press conference Monday by lawyer Vinicio Castillo, who said Santana was recruited to make the claims against Menendez by another lawyer, Dr. Miguel Galvan.

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"It's fun to watch seniors in competition, " Galvan said.

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Galvan, in a notarized confession, pins the blame on a third lawyer, who Galvan said asked him to assist in a divorce case by finding "witnesses" to claim they had sex for money with Menendez.

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