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Books > Science & Mathematics > Biology, life sciences > Zoology & animal sciences > Vertebrates > Birds (ornithology)

Antipredator Defenses in Birds and Mammals (Paperback, New): Tim Caro Antipredator Defenses in Birds and Mammals (Paperback, New)
Tim Caro; Illustrated by Sheila Girling
R1,758 Discovery Miles 17 580 Ships in 12 - 19 working days

In nature, the ability to defend against predators is fundamental to an animal's survival. From the giraffes that rely on their spotted coats to blend into the patchy light of their woodland habitats to the South American sea lions that pile themselves in heaps to ward off the killer whales that prey on them in the shallow surf, defense strategies in the animal kingdom are seemingly innumerable.
In "Antipredator Defenses in Birds and Mammals," Tim Caro ambitiously synthesizes predator defenses in birds and mammals and integrates all functional and evolutionary perspectives on antipredator defenses that have developed over the last century. Structured chronologically along a hypothetical sequence of predation--Caro evokes a gazelle fawn desperate to survive a cheetah attack to illustrate the continuum of the evolution of antipredator defenses--"Antipredator Defenses in Birds and Mammals" considers the defenses that prey use to avoid detection by predators; the benefits of living in groups; morphological and behavioral defenses in individuals and groups; and, finally, flight and adaptations of last resort.
"Antipredator Defenses in Birds and Mammals" will be of interest to both specialists and general readers interested in ecological issues.

Behind More Binoculars - Interviews with acclaimed birdwatchers (Hardcover): Mark Avery Behind More Binoculars - Interviews with acclaimed birdwatchers (Hardcover)
Mark Avery
R604 Discovery Miles 6 040 Ships in 12 - 19 working days

How and why did our most acclaimed birdwatchers take up birding? What were their early experiences of nature? How have their professional birding careers developed? What motivates them and drives their passion for wildlife? How many birds have they seen? Keith Betton and Mark Avery, passionate birdwatchers and conservationists, interview members of the birdwatching community to answer these and many other questions about the lives of famous birdwatchers. Following on from the success of their 2015 book Behind the Binoculars, Keith and Mark are back again, taking you behind the scenes, and behind the binoculars, of a diverse range of birding and wildlife personalities. Behind More Binoculars includes interviews with: Frank Gardner, Ann and Tim Cleeves, Roy Dennis, Kevin Parr, Tony Marr, Tim Appleton, Tim Birkhead, Dawn Balmer, Jon Hornbuckle, Tony Juniper, Richard Porter, Bryan Bland, Carol and Tim Inskipp, Barbara Young, Bill Oddie

Birds of Trinidad and Tobago (Paperback, 3rd Edition): Martyn Kenefick, Robin Restall, Floyd Hayes Birds of Trinidad and Tobago (Paperback, 3rd Edition)
Martyn Kenefick, Robin Restall, Floyd Hayes
R721 Discovery Miles 7 210 Ships in 12 - 19 working days

The tropical islands of Trinidad and Tobago enjoy a rich diversity of bird species, including visitors from the nearby mainland and others travelling the migratory flyway from North America. With beautiful colour illustrations and concise descriptions, this new and comprehensive field guide covers every species known to occur on the islands. - 115 colour plates illustrating all the relevant plumages of over 480 species - Concise descriptions of every species, highlighting plumage variation and distinctions from similar species - Up-to-date information on where to watch birds in Trinidad & Tobago - Includes an overview of the geography, climate and habitats of the islands

Birdsong - A Natural History (Paperback): Don Stap Birdsong - A Natural History (Paperback)
Don Stap
R646 Discovery Miles 6 460 Ships in 12 - 19 working days

Many of us have experienced the interruption, pleasant or otherwise, of a bird singing from high in the trees or a lone chirper perched outside a bedroom window and wondered what the song was about. Following a world expert on birdsong from the woods of Martha's Vineyard to the tropical forests of Central America, Don Staop brings to life the quest to unravel this ancient mystery: Why do birds sing and what do their songs really mean? In this creative mixture of reportage, storytelling, and research, Stap distills the complexities of the study of birdsong and unveils a remarkable discovery that sheds light on the mystery of mysteries: why young birds in the suborder oscines--the "true" songbirds--must learn their songs while closely related birds are born with their songs genetically encoded. As the story unfolds, Stap contemplates our enduring fascination with birdsong, from ancient pictographs and early Greek soothsayers to the story of Mozart's pet starling. He identifies birds by their specific sounds and calls, and explains the true function of a bird's song, from mating calls to claims of territory. In a modern, noisy world, it is increasingly difficult to hear the sounds of nature around us. Exploring birdsong takes us to that rare place--in danger of disappearing forever--where one hears only the planet's oldest music.

Conservation and Biology of Small Populations - The Song Sparrows of Mandarte Island (Hardcover): James N. M. Smith, Lukas F.... Conservation and Biology of Small Populations - The Song Sparrows of Mandarte Island (Hardcover)
James N. M. Smith, Lukas F. Keller, Amy B. Marr, Peter Arcese
R3,558 R2,837 Discovery Miles 28 370 Save R721 (20%) Ships in 12 - 19 working days

This book explores the factors affecting the survival of small populations. As the human impact on Earth expands, populations of many wild species are being squeezed into smaller and smaller habitats. As a consequence, they face an increasing threat of extinction. National and international conservation groups rush to add these populations, species and sub-species to their existing endangered and threatened lists. In nations with strong conservation laws, listing often triggers elaborate plans to rescue declining populations and restore their habitats. The authors review these theoretical ideas, the existing data, and explore the question: how well do small and isolated populations actually perform? Their case study group is the song sparrows of Mandarte Island, British Columbia. This population is small enough and isolated enough so that all individuals can be uniquely marked and their survival and reproduction monitored over many generations. This is one of the strongest long-term ecological studies of a contained vertebrate population, now in its 31st year.

Genetics and Evolution of the Domestic Fowl (Paperback, Revised): Lewis Stevens Genetics and Evolution of the Domestic Fowl (Paperback, Revised)
Lewis Stevens
R1,466 Discovery Miles 14 660 Ships in 12 - 19 working days

The science of genetics has undergone a period of very rapid and significant development in recent years, and the area of poultry genetics has been no exception. This book provides a balanced and up-to-date account of all the major areas of this subject from Mendelian to modern molecular genetics. The book begins by tracing the evolution of the domestic fowl (Gallus domesticus) from its avian ancestors. Subsequent chapters cover important aspects of poultry genetics, including cytogenetics, transmission genetics, gene mapping, sex linkage, lethal genes, genetics of feathering and plumage, and quantitative genetics. In each chapter, a concise explanation of the genetic principles is followed by a full discussion illustrated by key examples. In the latter part of the book, recent advances in gene cloning and sequencing are examined. In the area of molecular genetics, where the most rapid developments have been made, more extensive background information is given and a glossary of terms is included. The impact of these exciting new developments on our understanding of gene structure and organization, immunogenetics, and the evolution of proteins is assessed. Finally, the uses of transgenic techniques and their implications are discussed. This book provides a clear and useful survey of the genetics and evolution of the domestic fowl, which will be of interest to postgraduate students and researchers in the fields of genetics, agriculture, and veterinary medicine, as well as to poultry breeders, both commercial and non-commercial.

Avian Biochemistry and Molecular Biology (Paperback, New Ed): Lewis Stevens Avian Biochemistry and Molecular Biology (Paperback, New Ed)
Lewis Stevens
R1,472 Discovery Miles 14 720 Ships in 12 - 19 working days

The biology of birds is diverse and frequently differs significantly from that of other vertebrates. Many birds migrate or fly at high altitudes, while egg-laying and feather production places high demands on nutrient uptake and storage. This book is the only comprehensive and up-to-date survey of avian biochemistry and molecular biology available. It emphasises the similarities and differences between birds and other vertebrates, concentrating on new developments. The first section deals with protein, lipid and carbohydrate metabolism, its hormonal control and the adaptations that occur in birds. The second covers the avian genome, gene expression, and avian immunology. Growth and embryological development are also discussed. Avian Biochemistry and Molecular Biology will be of interest to all those working on birds, especially postgraduate students and researchers.

Barn Owls - Predator-Prey Relationships and Conservation (Paperback, Revised): Iain Taylor Barn Owls - Predator-Prey Relationships and Conservation (Paperback, Revised)
Iain Taylor
R2,196 Discovery Miles 21 960 Ships in 12 - 19 working days

When seen hunting over a meadow, barn owls have an ethereal grace and beauty that can be matched by no other bird. The barn owl has an almost global distribution and has lived in close proximity to humans since settlement and farming created the forest clearings needed for hunting and places in which to nest. However, in many countries, barn owl numbers are falling rapidly. This book explores the relationships between barn owls and their prey worldwide, and demonstrates how an understanding of such relationships can help in the conservation of the species. In this comprehensive account, Iain Taylor describes the biology and ecology of this species, including the factors affecting breeding success, and causes of mortality affecting the final recruitment of new birds into the population. He concludes by suggesting ways in which we can manage and conserve this beautiful bird for the future.

Bird Ecology and Conservation - A Handbook of Techniques (Paperback, New): William J. Sutherland, Ian Newton, Rhys Green Bird Ecology and Conservation - A Handbook of Techniques (Paperback, New)
William J. Sutherland, Ian Newton, Rhys Green
R2,023 Discovery Miles 20 230 Ships in 12 - 19 working days

In this intensely practical handbook, a team of leading ornithologists describe a wide range of standard methods that can be applied to the study of avian ecology and conservation. Topics covered range from surveys and tracking and handling to breeding biology, foraging behavior, and migration. Chapters on conservation techniques describe how to assess species over-exploitation, the methods available for the intensive conservation of endangered species, and the principles involved in the maintenance and restoration of habitats. This comprehensive synthesis will be essential reading for graduate students and researchers as well as a valuable resource for environmental consultants and professional conservationists worldwide.
Bird Ecology and Evolution is the first title in a new series of practical handbooks which include titles focusing on specific taxonomic groups as well as those describing broader themes and subjects. William J. Sutherland is the series editor.

Bird Life of Woodland and Forest (Paperback, New Ed): Robert J. Fuller Bird Life of Woodland and Forest (Paperback, New Ed)
Robert J. Fuller
R1,612 Discovery Miles 16 120 Ships in 12 - 19 working days

Woodlands offer birds an extremely wide range of habitats. In this book, the variation in bird life in woodlands, and the factors that influence bird numbers and distributions are examined. What birds are found in which habitats? What effect does forestry and woodland management have? How can we enhance bird populations by habitat management? Are bird numbers and distributions in natural and managed forests different - and if so, why? The gamut of British woodland is covered, from ancient coppice and wood-pasture in the lowlands, to recently-planted conifer forests in the uplands, and comparisons are drawn with mainland Europe and North America. The book discusses the effects of factors such as increased deer numbers, air-pollution and new wood creation on lowland farms, all of which are changing the face of our woodlands today. This book is a must for all those interested in woodlands, and the birds which live in them.

The Birds of Ghana - An Atlas and Handbook (Paperback): Francoise Dowsett-Lemaire, Robert J. Dowsett The Birds of Ghana - An Atlas and Handbook (Paperback)
Francoise Dowsett-Lemaire, Robert J. Dowsett
R1,180 Discovery Miles 11 800 Ships in 9 - 17 working days

This is the second account of the birds of Ghana (ex-Gold Coast), the first having been published by Grimes in 1987. It presents detailed information on the some 750 species known (among which there are 150 migrants from Eurasia and North America, of which more than 100 winter locally). Extensive field-work by the authors, augmented by the contribution of visiting or resident naturalists, means that the maps (for all species except vagrants) present a clear picture of distribution in this country of nearly 240,000 km2. The text complements the maps, with a synthesis of what is known of ecology, status, movements, breeding seasons, taxonomy and conservation concerns. Some 600 published references are cited, and there are details of ringing recoveries and a gazetteer of more than 860 localities. In 116 pages, the introductory chapters review the vegetation and major bird habitats, biogeography, migration, conservation and the history of ornithological exploration in Ghana. The conservation chapter draws attention to the considerable pressure that human activities (including deforestation, danis and over-fishing) are exerting on the environment and wildlife. Six species of birds have become extinct in Ghana in the last century, and several others are heavily threatened. Forty-nine species are considered to be of global or regional conservation concem, and the importance of the country's wildlife reserves is stressed, with forest reserves and other natural habitats being decimated at an alarming rate. Twenty-one pages of colour photos illustrate the habitats of Ghana as well as a selection of typical bird species. No bird is endemic to Ghana alone, but the country contains no fewer than 179 Guineo-Congolian forest species, including all but four of those endemic to Upper Guinea (Ghana westwards), Ghana is the one country where the striking Yellow-headed Picathartes (or Rockfowl) can be seen by all visiting birdwatchers.

Pigeons and Doves - A Guide to the Pigeons and Doves of the World (Hardcover): David Gibbs, Eustace Barnes Pigeons and Doves - A Guide to the Pigeons and Doves of the World (Hardcover)
David Gibbs, Eustace Barnes; Illustrated by John Cox, Eustace Barnes
R2,304 Discovery Miles 23 040 Ships in 12 - 19 working days

This volume is dedicated to the field identification of pigeons and doves, and it incorporates much recent information on the family.;Pigeons and doves are a large family of birds occurring throughout the world. Many species are specialist frugivores, while others feed on seeds. Most are arboral and the tropical species in particular are often brightly coloured. The family includes gregarious migratory species, as well as shy, ground-dwelling forms such as the exotic crowned pigeons of New Guinea.

Birds of Oman (Paperback): Richard Porter, Jens Eriksen Birds of Oman (Paperback)
Richard Porter, Jens Eriksen
R901 R829 Discovery Miles 8 290 Save R72 (8%) Ships in 12 - 19 working days

Oman is a truly amazing place. In terms of avifauna it lies at the crossroads between Asian and African species - Arabian desert species to the north, and a host of Afrotropical species occurring in the monsoon-swept south that don't occur anywhere else in the Western Palaearctic. With much of the Middle East now effectively off-limits to birders, people are increasingly turning to Oman and its avian riches. And what riches they are - highlights include the incredible Omani Owl, discovered just a couple of years ago in the Al Hajar mountains, a suite of regionally scarce wheatears, exotic pigeons, shearwaters and storm-petrels that can be seen from the beach, a host of wintering eagles plus impressive residents such as Verreaux's, the only accessible sites for Arabian Golden-winged Grosbeak and Yemen Serin ... the list goes on and on. This book is the perfect guide to this wonderful country's birdlife. Written by the world's leading expert on Middle Eastern birds, Richard Porter, along with Oman bird specialist Jen Eriksen, with colour plates opposite concise species text and accurate maps, it is indispensible for any naturalist visiting this jewel of the Arabian peninsula.

Bird Nests and Construction Behaviour (Hardcover): Mike Hansell Bird Nests and Construction Behaviour (Hardcover)
Mike Hansell; Illustrated by Raith Overhill
R3,419 Discovery Miles 34 190 Ships in 12 - 19 working days

Bird Nests and Construction Behaviour provides a broad view of our current understanding of the biology of the nests, bowers, and tools made by birds. It illustrates how birds, among vertebrates, have more impressive and consistent building abilities than any other builders, excluding humans. However, birds seem to require no special building equipment and use quite uncomplicated behavior. The book raises general issues in the field of behavioral ecology, including the costs of reproduction, sexual selection, and the organization and complexity of behavior. This volume was written for students and researchers of animal behavior, behavioral ecology, and ornithology, it will nevertheless make fascinating reading for architects and engineers interested in understanding how structures are created by animals.

Gardening for birds - Planting and projects to entice birds to your garden (Hardcover): Tracey Hawthorne Gardening for birds - Planting and projects to entice birds to your garden (Hardcover)
Tracey Hawthorne; Illustrated by Verne Jordaan
R196 Discovery Miles 1 960 Ships in 2 - 4 working days

This is a charming yet practical guide to planning and designing gardens with a view to attracting birds. It's a companion to the very successful Cooking for birds, also beautifully illustrated by Verne. The author caters for garden situations across the country, and includes advice on planning very small gardens and even planting on balconies. Specific 'habitats' are recommended, to attract the widest variety of birds – an open area, wetland, canopy section and wild zone. For each, there's a list of suggested plants, from ground covers to shrubs, creepers and trees. There are also sections on planting for birds with particular diets: nectar, seeds, fruit, insects and even meat. Beautifully presented, with simple text and delightful illustrations, this is an excellent perennial gift.

Where Song Began - Australia's Birds and How They Changed the World (Hardcover): Tim Low Where Song Began - Australia's Birds and How They Changed the World (Hardcover)
Tim Low
R769 Discovery Miles 7 690 Ships in 12 - 19 working days

An authoritative and entertaining exploration of Australia's distinctive birds and their unheralded role in global evolution Renowned for its gallery of unusual mammals, Australia is also a land of extraordinary birds. But unlike the mammals, the birds of Australia flew beyond the continent's boundaries and around the globe many millions of years ago. This eye-opening book tells the dynamic but little-known story of how Australia provided the world with songbirds and parrots, among other bird groups, why Australian birds wield surprising ecological power, how Australia became a major evolutionary center, and why scientific biases have hindered recognition of these discoveries. From violent, swooping magpies to tool-making cockatoos, Australia's birds are strikingly different from birds of other lands-often more intelligent and aggressive, often larger and longer-lived. Tim Low, a renowned biologist with a rare storytelling gift, here presents the amazing evolutionary history of Australia's birds. The story of the birds, it turns out, is inseparable from the story of the continent itself and also the people who inhabit it.

Ireland Birds - A Folding Pocket Guide to Familiar Species (Pamphlet, 2nd ed.): James Kavanagh, Waterford Press Ireland Birds - A Folding Pocket Guide to Familiar Species (Pamphlet, 2nd ed.)
James Kavanagh, Waterford Press; Illustrated by Raymond Leung
R203 R163 Discovery Miles 1 630 Save R40 (20%) Ships in 12 - 19 working days

Ireland's diverse habitats - ranging from forests and farmlands to peat bogs and coastlines - is home to about 450 species of resident and migratory birds. This beautifully illustrated guide highlights over 140 familiar and unique species and includes a map featuring prominent bird-viewing areas. Laminated for durability, this lightweight, pocket-sized folding guide is an excellent source of portable information for anyone interested in birds, and is ideal for field use by residents and visitors alike. Made in the USA.www.waterfordpress.com

Bird Migration (Paperback, Revised): Thomas Alerstam Bird Migration (Paperback, Revised)
Thomas Alerstam; Translated by David A. Christie
R2,573 Discovery Miles 25 730 Ships in 12 - 19 working days

The aim of this book is to give a general overview of the whole subject of bird migration. After a chapter describing the Earth's climate and ecosystem, the book is divided into three main sections. The first presents the life histories and migratory habits of nine different ecological categories of birds. The second section deals with the course and timing of the flight journeys, flight behavior, fuel economy, flocking, and the hazards from disorientation and predation. The final section covers the ways that birds navigate and shows that this process is still by no means fully understood.

Birds of Western Africa - Second Edition (Paperback, 2nd Revised edition): Nik Borrow, Ron Demey Birds of Western Africa - Second Edition (Paperback, 2nd Revised edition)
Nik Borrow, Ron Demey
R1,184 Discovery Miles 11 840 Ships in 12 - 19 working days

This revised and expanded edition of "Birds of Western Africa" is now the most up-to-date field guide available to the 1,285 species of birds found in the region--from Senegal and southern Mauritania east to Chad and the Central African Republic and south to Congo. It now features all maps and text opposite the plates for quick and easy reference. The comprehensive species accounts have been fully updated and expanded, and the color distribution maps have been completely revised. This premier guide also includes more than 3,000 illustrations on 266 stunning color plates.

Compact and lightweight, this new edition of "Birds of Western Africa" is the must-have field guide to one of the most exciting birding regions in the world.The premier field guide to West African birds--now completely revised and expandedCovers all 1,285 species found in the regionFeatures fully updated maps and text opposite the plates for easy referenceIncludes more than 3,000 illustrations on 266 color plates

Birdscapes - Birds in Our Imagination and Experience (Paperback): Jeremy Mynott Birdscapes - Birds in Our Imagination and Experience (Paperback)
Jeremy Mynott
R585 Discovery Miles 5 850 Ships in 12 - 19 working days

What draws us to the beauty of a peacock, the flight of an eagle, or the song of a nightingale? Why are birds so significant in our lives and our sense of the world? And what do our ways of thinking about and experiencing birds tell us about ourselves? "Birdscapes" is a unique meditation on the variety of human responses to birds, from antiquity to today, and from casual observers to the globe-trotting "twitchers" who sometimes risk life, limb, and marriages simply to add new species to their "life lists."

Drawing extensively on literature, history, philosophy, and science, Jeremy Mynott puts his own experiences as a birdwatcher in a rich cultural context. His sources range from the familiar--Thoreau, Keats, Darwin, and Audubon--to the unexpected--Benjamin Franklin, Giacomo Puccini, Oscar Wilde, and Monty Python. Just as unusual are the extensive illustrations, which explore our perceptions and representations of birds through images such as national emblems, women's hats, professional sports logos, and a Christmas biscuit tin, as well as classics of bird art. Each chapter takes up a new theme--from rarity, beauty, and sound to conservation, naming, and symbolism--and is set in a new place, as Mynott travels from his "home patch" in Suffolk, England, to his "away patch" in New York City's Central Park, as well as to Russia, Australia, and Greece.

Conversational, playful, and witty, "Birdscapes" gently leads us to reflect on large questions about our relation to birds and the natural world. It encourages birders to see their pursuits in a broader human context--and it shows nonbirders what they may be missing.

The Common Buzzard (Paperback): Sean Walls, Robert Kenward The Common Buzzard (Paperback)
Sean Walls, Robert Kenward; Illustrated by Alan Harris
R1,261 Discovery Miles 12 610 Ships in 12 - 19 working days

Soaring majestically on its broad, raised wings, the Common Buzzard is a familiar sight for many people in Eurasia. Recently, this highly adaptable raptor has demonstrated an uncommon ability to reach high densities in western Europe, returning to old haunts to impress, inspire and connect people with nature. This new Poyser monograph brings together a wealth of research on the species' origins, feeding and breeding behaviour, along with information on movement and survival from the authors' own studies. It concludes by examining the conservation conundrums that such a successful predator raises in the modern world.

The Ecology of Bird Communities (Paperback, Revised): John A. Wiens The Ecology of Bird Communities (Paperback, Revised)
John A. Wiens
R2,359 Discovery Miles 23 590 Ships in 12 - 19 working days

The two volumes of John Wiens' Ecology of Bird Communities, first published in 1992, are recognised as having applications and importance beyond the study of birds to the wider study of ecology in general. The books contain a detailed synthesis of our understanding of the patterns of organisation of bird communities and of the factors that may determine them, drawing from studies from all over the world. The author, however, does more than simply review findings in bird community ecology. By emphasizing how proper logic and methods have or have not been followed and how different viewpoints have developed historically and have led to controversy, he extends the scope of these books far beyond the study of birds. Volume 1 Foundations and Patterns explores why avian community ecologists ask the questions they do and what philosophical and methodological approaches they have used to answer such questions. Most of the book is devoted to a critical evaluation of what is known about the nature and organisation of bird communities.

The Ecology of Bird Communities (Paperback): John A. Wiens The Ecology of Bird Communities (Paperback)
John A. Wiens
R1,607 Discovery Miles 16 070 Ships in 12 - 19 working days

The two volumes of John Wiens' Ecology of Bird Communities have applications and importance to the whole field of ecology. The books contain a detailed synthesis of our current understanding of the patterns of organisation of bird communities and of the factors that may determine them, drawing from studies from all over the world. By emphasizing how proper logic and methods have or have not been followed and how different viewpoints have developed historically and have led to controversy, the scope of these books are extended far beyond the study of birds. Processes and Variations discusses the way in which bird community patterns have been interpreted. This second volume examines how the complexity and variability of natural environments may influence efforts to discern and understand the nature of these communities. Graduate students and professionals in avian biology and ecology will find these volumes a valuable stimulus and guide to future field studies and theory development.

How and Why Species Multiply - The Radiation of Darwin's Finches (Paperback): Peter R. Grant, B.Rosemary Grant How and Why Species Multiply - The Radiation of Darwin's Finches (Paperback)
Peter R. Grant, B.Rosemary Grant
R909 Discovery Miles 9 090 Ships in 12 - 19 working days

Charles Darwin's experiences in the Galapagos Islands in 1835 helped to guide his thoughts toward a revolutionary theory: that species were not fixed but diversified from their ancestors over many generations, and that the driving mechanism of evolutionary change was natural selection. In this concise, accessible book, Peter and Rosemary Grant explain what we have learned about the origin and evolution of new species through the study of the finches made famous by that great scientist: Darwin's finches.

Drawing upon their unique observations of finch evolution over a thirty-four-year period, the Grants trace the evolutionary history of fourteen different species from a shared ancestor three million years ago. They show how repeated cycles of speciation involved adaptive change through natural selection on beak size and shape, and divergence in songs. They explain other factors that drive finch evolution, including geographical isolation, which has kept the Galapagos relatively free of competitors and predators; climate change and an increase in the number of islands over the last three million years, which enhanced opportunities for speciation; and flexibility in the early learning of feeding skills, which helped species to exploit new food resources. Throughout, the Grants show how the laboratory tools of developmental biology and molecular genetics can be combined with observations and experiments on birds in the field to gain deeper insights into why the world is so biologically rich and diverse.

Written by two preeminent evolutionary biologists, "How and Why Species Multiply" helps to answer fundamental questions about evolution--in the Galapagos and throughout the world."

Ocean to Alpine - A British Columbia Nature Guide (Paperback): Joy Finlay, Cam Finlay Ocean to Alpine - A British Columbia Nature Guide (Paperback)
Joy Finlay, Cam Finlay
R538 Discovery Miles 5 380 Ships in 12 - 19 working days

Organized by region, this nature guide to over 350 places in BC provides directions and information on hiking and accommodation.

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