Bonier, Frances; Martin, Paul R.; Sheldon, Kimberly S.; … - In: Behavioral Ecology 18 (2007) 1, pp. 121-129
types. To assess the fitness correlates of variation in hormone levels, we monitored seasonal reproductive success in one … urban population and found that baseline corticosterone levels were predictive of female, but not male, reproductive success …, and reproductive success. Females with blood parasites had lower heterophil:lymphocyte ratios, lower body condition scores …