Mutual Aid

Mutual Aid PDF

Author: Pablo Servigne

Publisher: John Wiley & Sons

Published: 2021-11-11

Total Pages: 163

ISBN-13: 1509547932

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In the merciless arena of life, we are all subject to the law of the jungle, to ruthless competition and the survival of the fittest – such is the myth that has given rise to a society that has become toxic for our planet and for our and future generations. But today the lines are shifting. A growing number of new movements and thinkers are challenging this skewed view of the world and reviving words such as ‘altruism’, ‘cooperation’, ‘kindness’ and ‘solidarity’. A close look at the wide spectrum of living beings reveals that, at all times and in all places, animals, plants, microorganisms and human beings have practised different forms of mutual aid. And those which survive difficult conditions best are not necessarily the strongest, but those which help each other the most. Pablo Servigne and Gauthier Chapelle explore a vast, forgotten continent of mutual aid in order to discover the mechanisms of this ‘other law of the jungle’. In so doing, they provide a more rounded view of the world of living things and give us some of the conceptual tools we need to move beyond the vicious circle of competition and self-destruction that is leading our civilization to the verge of collapse.

Shorebirds

Shorebirds PDF

Author: J. Burger

Publisher: Springer Science & Business Media

Published: 2013-11-11

Total Pages: 433

ISBN-13: 1468446916

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Among birds, shorebirds provide some of the more unique opportunities to examine basic problems in behavior, ecology, and evolution. This is in large measure due to the diversity, both behaviorally and ecologically, of a group closely related taxonomically and distributed throughout the world. The overall aim of these two volumes is to provide a representative selection of current research being conducted on shorebird behavior and ecology. Traditionally, marine birds have included those species that breed in large colonies on offshore islands along coasts (see Volume 4 of this series). Although shorebirds have generally not been considered within this group, the fact that almost 40% of the species breed along coasts and more than 60% often or always spend the nonbreeding season in coastal habitats more than justifies their inclusion as marine birds (at least those species that totally or partially depend upon the marine environment). Their inclusion markedly increases species diversity in marine birds since shorebirds add about 217 species to the 280 that are traditionally thought of as marine.

Avian Energetics and Nutritional Ecology

Avian Energetics and Nutritional Ecology PDF

Author: C. Carey

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 557

ISBN-13: 1461304253

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A symposium held in 1973 chaired and organized by William R. Dawson was the first major attempt to summarize and synthesize the existing information in the then emerging field of avian energetics. The symposium featured papers by James R. King, William A. Calder III, Vance A. Tucker, and Robert E. Ricklefs and com mentaries by George A. Bartholomew, S. Charles Kendeigh, and Eugene P. Odum. The proceedings of the symposium, Avian Energetics (Paynter 1974), played a critical role in stimulating interest and research in the field of avian energetics. Some twenty-odd years later, we are making another attempt to summarize the information in the field of avian energetics. Some obvious differences exist be tween its predecessor and this volume. Numerous improvements in methodology, such as the use of doubly labeled water to estimate metabolism in free-living birds, now allow researchers to ask questions that could not be addressed previ ously. Second, consideration of nutrition is now inseparable from that of energet ics. This merger is necessary not only because food intake is the source of both en ergy and nutrients but also because one or more nutrients, rather than energy, can be limiting for a given species in a particular instance. Finally, the study of ener getics and nutritional ecology, particularly in birds and mammals, has grown so dramatically that a single volume can now only partially cover the range of possi ble topics and can catalogue only a sampling of all the studies on the subject.

Seabird Energetics

Seabird Energetics PDF

Author: G. Causey Whittow

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 330

ISBN-13: 1468448595

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"Seabird Energetics" is a composite volume with a coherent theme. It makes a valuable contribution to our understanding of the costs of breeding, the significance of which goes far beyond physiology as a brief historical perspective may illustrate. After decades of mainly anecdotal observations by natu ralists with an interest in seabirds, there was still so little information that in 1954, David Lack in his book "The Natural Regulatiori of Animal Numbers" was forced to ignore seabirds in a way that would be unthinkable today. The late fifties, however, produced a seminal contribution to seabird ecology and behaviour in the series of papers which stemmed from the Centenary Expedi tion of the British Ornithologists' Union to Ascension Island. Not only had quantitative ecology become the norm but the interest aroused by the European Ethological approach to bird behaviour had led to properly descriptive and analytical studies of seabird behaviour. The complex interactions between social behaviour and ecology then received more attention and the sixties and seventies brought a flood of papers on ecology and on some social aspects of breeding ecology. V.C. Wynne-Edwards linked these two as part of his attempt to understand the mechanism of the regulation of animal populations in his book "Animal Dispersion in Relation to Social Behaviour" (1962). He paid considerable attention to seabirds and the phenomena of clutch and brood-size, deferred breeding, "rest" years, etc., although, unfortunately, the most relevant studies were yet to come.

The Most Perfect Thing

The Most Perfect Thing PDF

Author: Tim Birkhead

Publisher: Bloomsbury Publishing USA

Published: 2016-04-12

Total Pages: 305

ISBN-13: 1632863715

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A bird's egg is a nearly perfect survival capsule--an external womb--and one of natural selection's most wonderful creations. Shortlisted for the Royal Society Insight Investment Science Book Prize 2016.One of Forbes' Best Books About Birds and Birding in 2016. Renowned ornithologist Tim Birkhead opens this gripping story as a female guillemot chick hatches, already carrying her full quota of tiny eggs within her undeveloped ovary. As she grows into adulthood, only a few of her eggs mature, are released into the oviduct, and are fertilized by sperm stored from copulation that took place days or weeks earlier. Within a matter of hours, the fragile yolk is surrounded by albumen and the whole is gradually encased within a turquoise jewel of a shell. Soon the fully formed egg is expelled onto a rocky ledge, where it will be incubated for four weeks before a chick emerges and the life cycle begins again. THE MOST PERFECT THING is about how eggs in general are made, fertilized, developed, and hatched. Birkhead uses birds' eggs as wondrous portals into natural history, enlivened by the stories of naturalists and scientists, including Birkhead and his students, whose discoveries have advanced current scientific knowledge of reproduction.