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  1. No Access

    Article

    Prevalence of Blood Parasites in Eastern Versus Western House Finches: Are Eastern Birds Resistant to Infection?

    The rapid spread of the bacterial disease, Mycoplasma gallisepticum (MG), throughout the introduced range of house finches (Carpodacus mexicanus) in eastern North America, compared to its slower spread through th...

    Andrew K. Davis, Wendy R. Hood, Geoffrey E. Hill in EcoHealth (2013)

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    Article

    The effect of rearing environment on blue structural coloration of eastern bluebirds (Sialia sialis)

    We used a brood-size manipulation to test the effect of rearing environment on structural coloration of feathers grown by eastern bluebird (Sialia sialis) nestlings. Ultraviolet (UV)-blue structural coloration ha...

    Lynn Siefferman, Geoffrey E. Hill in Behavioral Ecology and Sociobiology (2007)

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    Article

    An experimental test of female choice relative to male structural coloration in eastern bluebirds

    Several experimental studies have shown that female birds use ornamental melanin and carotenoid plumage coloration as criteria in mate choice. Whether females choose mates based on natural variation in structu...

    Mark Liu, Lynn Siefferman, Geoffrey E. Hill in Behavioral Ecology and Sociobiology (2007)

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    Article

    Yolk androgen deposition as a compensatory strategy

    The deposition of androgens into the yolks of eggs can have long-lasting effects on the growth and development of young birds. It has been proposed that female birds and reptiles deposit yolk androgens accordi...

    Kristen J. Navara, Geoffrey E. Hill… in Behavioral Ecology and Sociobiology (2006)

  5. No Access

    Article

    Egg coloration is correlated with female condition in eastern bluebirds (Sialia sialis)

    Egg coloration has been hypothesized to reflect female condition. Because of the proposed physiological costs associated with deposition of biliverdin pigments and because of their conspicuousness, eggs with b...

    Lynn Siefferman, Kristen J. Navara, Geoffrey E. Hill in Behavioral Ecology and Sociobiology (2006)

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    Article

    A simple and inexpensive chemical test for behavioral ecologists to determine the presence of carotenoid pigments in animal tissues

    Animals use several different types of pigments to acquire their colorful ornaments. Knowing the types of pigments that generate animal colors often provides valuable information about the costs of develo** ...

    Kevin J. McGraw, Jocelyn Hudon, Geoffrey E. Hill… in Behavioral Ecology and Sociobiology (2005)

  7. No Access

    Article

    Sexual selection and cuckoldry in a monogamous songbird: implications for sexual selection theory

    Sexual selection is generally assumed to be weaker in monogamous than in polygynous animals. Recently, though, extra-pair fertilizations have been hailed as an important force in generating variance in reprodu...

    Geoffrey E. Hill, Robert Montgomerie… in Behavioral Ecology and Sociobiology (1994)