Ever since the acorn woodpecker was observed and described by Spanish explorers, its behavior--particularly the unique habit of caching acorns in specialized storage trees or granaries--has impressed observers. Acorn woodpeckers are also one of the few temperate zone species in which young are reared communally in family groups. This demographic study investigates the complexities of acorn storage and group living in acorn woodpeckers at Hastings Reservation in central coastal California. It is one of the most thorough studies of any avian social system to date.

Cooperative breeders are species in which more than a pair of individuals assist in the production of young. Cooperative breeding is found in only a few hundred bird species world-wide, and understanding this often strikingly altruistic behaviour has remained an important challenge in behavioural ecology for over 30 years. This book highlights the theoretical, empirical and technical advances that have taken place in the field of cooperative breeding research since the publication of the seminal work Cooperative Breeding in Birds: Long-term Studies of Behavior and Ecology (1990, HB ISBN 0521 372984, PB ISBN 0521 378907). Organized conceptually, special attention is given to ways in which cooperative breeders have proved fertile subjects for testing modern advances to classic evolutionary problems including those of sexual selection, sex-ratio manipulation, life-history evolution, partitioning of reproduction and incest avoidance. It will be of interest to both students and researchers interested in behaviour and ecology.

Stacey and Koenig discuss the phenomenon of cooperative breeding among birds, an unusual kind of social behavior common to only a few hundred species worldwide, in which individuals other than the male-female pairs help to raise the young of a single nest or den. Because certain individuals aid in raising offspring which are not their own, cooperative breeding gives rise to some of the clearest examples of altruism among animals. This unique breeding behavior is of interest to evolutionary biologists and behavioral ecologists since such species exhibit some of the most unusual and bizarre social behavior observed anywhere in the animal kingdom. The studies are all long term and consequently the book summarizes some of the most extensive studies of the behavior of marked individuals ever undertaken. Graduate students and research workers in ornithology, sociobiology, behavioral ecology and evolutionary biology will find much of value in this book.

Stacey and Koenig discuss the phenomenon of cooperative breeding among birds, an unusual kind of social behavior common to only a few hundred species worldwide, in which individuals other than the male-female pairs help to raise the young of a single nest or den. Because certain individuals aid in raising offspring which are not their own, cooperative breeding gives rise to some of the clearest examples of altruism among animals. This unique breeding behavior is of interest to evolutionary biologists and behavioral ecologists since such species exhibit some of the most unusual and bizarre social behavior observed anywhere in the animal kingdom. The studies are all long term and consequently the book summarizes some of the most extensive studies of the behavior of marked individuals ever undertaken. Graduate students and research workers in ornithology, sociobiology, behavioral ecology and evolutionary biology will find much of value in this book.

Cooperative breeders are species in which individuals beyond a pair assist in the production of young in a single brood or litter. Although relatively rare, cooperative breeding is widespread taxonomically and continues to pose challenges to our understanding of the evolution of cooperation and altruistic behavior. Bringing together long-term studies of cooperatively breeding birds, mammals, and fish, this volume provides a synthesis of current studies in the field. The chapters are organised by individual studies of particular species or (in the case of mole-rats) two closely related cooperatively breeding species. Each focuses not only on describing behavior and ecology but also on testing evolutionary hypotheses for the form and function of the diverse and extraordinary cooperative breeding lifestyles that have been discovered. This unique and comprehensive text will be of interest to graduate students and researchers of behavioral ecology and the evolution of cooperation.

Cooperative breeders are species in which individuals beyond a pair assist in the production of young in a single brood or litter. Although relatively rare, cooperative breeding is widespread taxonomically and continues to pose challenges to our understanding of the evolution of cooperation and altruistic behavior. Bringing together long-term studies of cooperatively breeding birds, mammals, and fish, this volume provides a synthesis of current studies in the field. The chapters are organised by individual studies of particular species or (in the case of mole-rats) two closely related cooperatively breeding species. Each focuses not only on describing behavior and ecology but also on testing evolutionary hypotheses for the form and function of the diverse and extraordinary cooperative breeding lifestyles that have been discovered. This unique and comprehensive text will be of interest to graduate students and researchers of behavioral ecology and the evolution of cooperation.