Anthropogenic impacts, such as noise pollution from transportation networks, can serve as
stressors to some wildlife species. For example, increased exposure to traffic noise has …

Phenotypic flexibility is a central way that organisms cope with challenging and changing
environments. As endocrine signals mediate many phenotypic traits, heritable variation in …

Across taxa, extra‐pair mating is widespread among socially monogamous species, but few
studies have identified male ornamental traits associated with extra‐pair mating success …

Conditions during early life can have dramatic effects on adult characteristics and fitness.
However, we still know little about the mechanisms that mediate these relationships …

Rates of extrapair paternity (EPP) vary widely among and within bird species, and 2
hypotheses suggest that this variation is driven by variation in breeding synchrony. These …

The risk of predation directly affects the physiology, behavior, and fitness of wild birds.
Strong social connections with conspecifics could help individuals recover from a stressful …

Female birds that engage in extrapair mating may choose extrapair mates that are
genetically compatible, increasing their fitness through genetic benefits, such as increased …

Geographic patterns of variation in life‐history traits have puzzled researchers for decades.
However, the widely accepted idea that mating systems exhibit a tropical–temperate …

The risk of predation directly affects physiology, behavior, and fitness of wild birds. Social
interactions with conspecifics may affect how individuals respond to stressors such as …

The manner in which individual life history traits respond to the environment and to each
other, and how these traits combine to form overall patterns of life history variation, remains …