▪ Abstract It has recently been argued that the paradox of hel** behavior in birds has been
solved. This optimism may be premature. I argue that there is no obvious dichotomy …

Ecological variables often fluctuate synchronously over wide geographical areas, a
phenomenon known as spatial autocorrelation or spatial synchrony. Development of …

Social norms and the associated altruistic behaviours are decisive for the evolution of
human cooperation,,,,,,,, and the maintenance of social order, and they affect family life …

In The Black-Tailed Prairie Dog, John L. Hoogland draws on sixteen years of research at
Wind Cave National Park, South Dakota, in the United States to provide this account of …

Darwin famously described special difficulties in explaining social evolution in insects. More
than a century later, the evolution of sociality-defined broadly as cooperative group living …

African mole-rats are a unique taxon of subterranean rodents that range in sociality from
solitary-dwelling species to two" eusocial" species, the Damaraland mole-rat and the naked …

An evolutionary framework for viewing the formation, the stability, the organizational
structure, and the social dynamics of biological families is developed. This framework is …

Some individuals (helpers) in cooperatively breeding species provide alloparental care and
often suppress their own reproduction. Kin selection is clearly an important explanation for …

Cooperative breeding refers to a social system in which individuals other than the parents
provide care for the offspring. In addition to alloparental care, two further characteristics are …

The ecological constraints hypothesis is widely accepted as an explanation for the evolution
of delayed dispersal in cooperatively breeding birds. Intraspecific studies offer the strongest …