Structural coloration signals condition, parental investment, and circulating hormone levels in Eastern bluebirds (Sialia sialis)

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Life Sciences, Behavioral Sciences, Psychology +10

Heritable True Fitness and Bright Birds: A Role for Parasites?

W D Hamilton, Marlene Zuk · Science · 1982 · 3.8K citations

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Unrepeatable Repeatabilities: A Common Mistake

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RESTITUTION OF MASS–SIZE RESIDUALS: VALIDATING BODY CONDITION INDICES

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Life Sciences, Biostatistics, Ecology +15

Plumage coloration is a sexually selected indicator of male quality

Geoffrey E. Hill · Nature · 1991 · 853 citations · Full text

Life Sciences, Ecology, Zoology +12