The honesty of bird song: multiple constraints for multiple traits

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

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

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Parasites, Bright Males, and the Immunocompetence Handicap

Ivar Folstad, Andrew J. Karter · The American Naturalist · 1992 · 2.8K citations

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Ecological immunology: costly parasite defences and trade-offs in evolutionary ecology

Ben C. Sheldon, Simon Verhulst · Trends in Ecology & Evolution · 1996 · 2.6K citations

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Biological signals as handicaps

Alan Grafen · Journal of Theoretical Biology · 1990 · 2.5K citations

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Bird song: biological themes and variations

Choice Reviews Online · 1996 · 2.2K citations

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