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Long‐term interactions among individuals are a hallmark of animal societies, but groups rarely remain entirely stable over time. Individuals die or emigrate, or groups become spatially fragmented. Group fragmentation can alter the phenotypic composition of subgroups by separating well‐connected individuals or altering sex ratios, which may alter the execution of collective behaviors. Over 10 days,...
Summary Animal populations exhibit various patterns in ectoparasite distribution across different sexes and age classes, and numerous factors can potentially contribute to ectoparasite abundance and distribution. We examined the influence of host body size and age on the distribution of a chewing louse among brown-headed cowbirds. Differences in louse prevalence (males 62.9 ± 2.8 %, females 47.5 ±...
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