flightless-birds

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Flightless Birds

Author : Clive Roots
ISBN : 0313335451
Genre : Business & Economics
File Size : 58. 21 MB
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Explores the flightlessness of wild birds whose ancestors could fly; discusses how their abilities changed due to evolution; and details the birds' habitat, range, physiology, food, breeding, predation, and threats.

Palaeobiology Of Giant Flightless Birds

Author : Delphine Angst
ISBN : 9780081011430
Genre : Science
File Size : 44. 96 MB
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The fossil record of giant flightless birds extends back to the Late Cretaceous, more than 70 million years ago, but our understanding of these extinct birds is still incomplete. This is partly because the number of specimens available is sometimes limited, but also because widely different approaches have been used to study them, with sometimes contradictory results. This book summarizes the current knowledge of the paleobiology of seven groups of giant flightless birds: Dinornithiformes, Aepyornithiformes, Dromornithidae, Phorusrhacidae, Brontornithidae, Gastornithidae and Gargantuavis. The first chapter presents the global diversity of these birds and reviews the tools and methods used to study their paleobiology. Chapters 2 to 8 are each dedicated to one of the seven groups of extinct birds. Finally, a conclusion offers a global synthesis of the information presented in the book in an attempt to define a common evolutionary model. Focuses on the giant flightless birds that evolved independently in different parts of the world since the Cretaceous period Covers a number of different families with different evolutionary histories, providing a source of interesting comparisons Provides emphasis on the palaeobiology of these birds, including their evolution, adaptations, mode of life, ecology and extinction

The Birds World

Author : Nicolae Sfetcu
ISBN :
Genre : Pets
File Size : 56. 50 MB
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Birds are among the most extensively studied of all animal groups. Hundreds of academic journals and thousands of scientists are devoted to bird research, while amateur enthusiasts (called birdwatchers or, more commonly, birders) probably number in the millions. Birds are categorised as a biological class, Aves. The earliest known species of this class is Archaeopteryx lithographica, from the Late Jurassic period. According to the most recent consensus, Aves and a sister group, the order Crocodilia, together form a group of unnamed rank, the Archosauria. Phylogenetically, Aves is usually defined as all descendants of the most recent common ancestor of modern birds (or of a specific modern bird species like Passer domesticus), and Archaeopteryx. Modern phylogenies place birds in the dinosaur clade Theropoda. Modern birds are divided into two superorders, the Paleognathae (mostly flightless birds like ostriches), and the wildly diverse Neognathae, containing all other birds.

The Origin And Evolution Of Birds

Author : Alan Feduccia
ISBN : 0300078617
Genre : Nature
File Size : 42. 5 MB
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An exploration of all that is known about the origin of birds and of avian flight. It draws on fossil evidence and studies of the structure and biochemistry of living birds to present knowledge and data on avian evolution and to propose a new model of this evolutionary process.

The Inner Bird

Author : Gary W. Kaiser
ISBN : 9780774859813
Genre : Science
File Size : 79. 85 MB
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Birds are among the most successful vertebrates on Earth. An important part of our natural environment and deeply embedded in our culture, birds are studied by more professional ornithologists and enjoyed by more amateur enthusiasts than ever before. However, both amateurs and professionals typically focus on birds' behaviour and appearance and only superficially understand the characteristics that make birds so unique. The Inner Bird introduces readers to the avian skeleton, then moves beyond anatomy to discuss the relationships between birds and dinosaurs and other early ancestors. Gary Kaiser examines the challenges scientists face in understanding avian evolution - even recent advances in biomolecular genetics have failed to provide a clear evolutionary story. Using examples from recently discovered fossils of birds and near-birds, Kaiser describes an avian history based on the gradual abandonment of dinosaur-like characteristics, and the related acquisition of avian characteristics such as sophisticated flight techniques and the production of large eggs. Such developments have enabled modern birds to invade the oceans and to exploit habitats that excluded dinosaurs for millions of years. While ornithology is a complex discipline that draws on many fields, it is nevertheless burdened with obsolete assumptions and archaic terminology. The Inner Bird offers modern interpretations for some of those ideas and links them to more current research. It should help anyone interested in birds to bridge the gap between long-dead fossils and the challenges faced by living species.

The Evolution Of Flying And Flightless Birds

Author : Sir Gavin De Beer
ISBN : 0199141711
Genre : Birds
File Size : 79. 84 MB
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Island Biogeography

Author : Robert J. Whittaker
ISBN : 0198566115
Genre : Nature
File Size : 27. 43 MB
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Isolation, extinction, conservation, biodiversity, hotspots.

Birds By Night

Author : Graham Martin
ISBN : 9781408137697
Genre : Nature
File Size : 37. 18 MB
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For many people, watching and studying birds is exclusively a day time activity. However, for many birds twilight and night time are not a barrier to useful activity. It is true that very few birds are exclusively nocturnal, but many birds which are active by day also conduct limited, and often crucial, activities after dusk. This book examines many examples of the nocturnal behaviour of birds; from the occasional night feeding of wildfowl and shorebirds to the night singing and night migration of certain passerines, and from the location of nest sites by sea birds to the nocturnal foraging of owls and nightjars. The special cases of flightless nocturnal birds and those birds which dwell in lightless caves are also considered. Throughout, this survey considers not only what it is that birds do at night but also discusses how these nocturnal activities are possible. It brings together studies in field ornithology, sensory science, ecology and physics and involves comparisons of the sensory capacities of other animals, including man. It is shown how the senses of hearing, smell and touch, as well as vision, play a crucial role in many of the night time activities of birds. However, these senses are not always adequate for fully explaining how nocturnal behaviours are executed. To achieve this we must look at the complex of relationships between behavioural and sensory adaptations and the particular environments which birds inhabit from dusk to dawn. Jacket paintings by John Busby

Avian Evolution

Author : Gerald Mayr
ISBN : 9781119020769
Genre : NATURE
File Size : 81. 11 MB
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Knowledge of the evolutionary history of birds has much improved in recent decades. Fossils from critical time periods are being described at unprecedented rates and modern phylogenetic analyses have provided a framework for the interrelationships of the extant groups. This book gives an overview of the avian fossil record and its paleobiological significance, and it is the only up-to-date textbook that covers both Mesozoic and more modern-type Cenozoic birds in some detail. The reader is introduced to key features of basal avians and the morphological transformations that have occurred in the evolution towards modern birds. An account of the Cenozoic fossil record sheds light on the biogeographic history of the extant avian groups and discusses fossils in the context of current phylogenetic hypotheses. This review of the evolutionary history of birds not only addresses students and established researchers, but it may also be a useful source of information for anyone else with an interest in the evolution of birds and a moderate background in biology and geology.

Boys Life

Author :
ISBN :
Genre :
File Size : 64. 56 MB
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Boys' Life is the official youth magazine for the Boy Scouts of America. Published since 1911, it contains a proven mix of news, nature, sports, history, fiction, science, comics, and Scouting.

Dinosaurs Of The Air

Author : Gregory S. Paul
ISBN : 0801867630
Genre : Nature
File Size : 40. 77 MB
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This book synthesises the growing body of evidence which suggests that modern-day birds have evolved from theropod dinosaurs of prehistoric times. The author argues that the ancestor-descendant relationship can also be reversed.

Birds Of The World

Author : Jason A. Mobley
ISBN : 0761477756
Genre : Juvenile Nonfiction
File Size : 79. 83 MB
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Birds of all imaginable sizes, shapes, colors, and patterns are nearly everywhere we might care to look, expressing a bewildering array of behaviors and strategies for successful living among all manner of challenges to survival.

Everything You Always Wanted To Know About Birds But Were Afraid To Ask

Author : Stephen Moss
ISBN : 9781408132975
Genre : Nature
File Size : 79. 56 MB
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This RSPB-endorsed book answers all those burning questions about birds that beginners and experts alike may ask themselves as they go about their birding. How do ducks keep their feet from freezing in winter? Why don't swallows stay in Africa? Are birds really dinosaurs, or were dinosaurs really birds? How is it decided whether bird species should be 'split' or 'lumped'? Taking a 'questions and answers' approach, each specific question leads to an answer which expands the theme under discussion, so that all aspects of bird life and the hobby of birding are covered. The scientifically rigorous answers together form an impressive and fascinating body of bird-related information. This highly readable book will intrigue anyone with an interest in birds. "Concise and informative, in a chatty everyday style... a great book for dipping into." Birds "Packed with hundreds of questions that anyone broadly interested in birds might ask, each one answered in an easy-to-understand manner. Excellent for anyone, new to birdwatching or not." BTO News

The Rise Of Birds

Author : Sankar Chatterjee
ISBN : 9781421415901
Genre : Nature
File Size : 72. 80 MB
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A small set of fossilized bones discovered almost thirty years ago led paleontologist Sankar Chatterjee on a lifelong quest to understand their place in our understanding of the history of life. They were clearly the bones of something unusual, a bird-like creature that lived long, long ago in the age of dinosaurs. He called it Protoavis, and the animal that owned these bones quickly became a contender for the title of "oldest known bird." In 1997, Chatterjee published his findings in the first edition of The Rise of Birds. Since then Chatterjee and his colleagues have searched the world for more transitional bird fossils. And they have found them. This second edition of The Rise of Birds brings together a treasure trove of fossils that tell us far more about the evolution of birds than we once dreamed possible. With no blind allegiance to what he once thought he knew, Chatterjee devours the new evidence and lays out the most compelling version of the birth and evolution of the avian form ever attempted. He takes us from Texas to Spain, China, Mongolia, Madagascar, Australia, Antarctica, and Argentina. He shows how, in the "Cretaceous Pompeii" of China, he was able to reconstruct the origin and evolution of flight of early birds from the feathered dinosaurs that lay among thousands of other amazing fossils. Chatterjee takes us to where long-hidden bird fossils dwell. His compelling, occasionally controversial, revelations—accompanied by spectacular illustrations—are a must-read for anyone with a serious interest in the evolution of "the feathered dinosaurs," from vertebrate paleontologists and ornithologists to naturalists and birders.

Do Birds Have Knees?

Author : Stephen Moss
ISBN : 9781472932372
Genre : Nature
File Size : 79. 60 MB
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This RSPB-endorsed book answers all those burning questions about birds that beginners and experts alike may ask themselves as they go about their birding. How do ducks keep their feet from freezing in winter? Why don't swallows stay in Africa? Are birds really dinosaurs, or were dinosaurs really birds? And do birds have knees? Taking a 'questions and answers' approach, each specific question leads to an answer which expands the theme under discussion, so that all aspects of bird life and the hobby of birding are covered. The scientifically rigorous answers together form an impressive and fascinating body of bird-related information. This highly readable book will intrigue anyone with an interest in birds.

Britannica Student Encyclopedia

Author : Encyclopaedia Britannica, Inc
ISBN : 9781625131720
Genre : Juvenile Nonfiction
File Size : 21. 26 MB
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Entertaining and informative, the newly updated Britannica Student Encyclopedia helps children gain a better understanding of their world. Updated for 2015, more than 2,250 captivating articles cover everything from Barack Obama to video games. Children are sure to immerse themselves in 2,700 photos, charts, and tables that help explain concepts and subjects, as well as 1,200 maps and flags from across the globe. Britannica Student is curriculum correlated and a recent winner of the 2008 Teachers Choice Award and 2010 AEP Distinguished achievement award.

A Dictionary Of Birds

Author : Bruce Campbell
ISBN : 9781408138397
Genre : Nature
File Size : 72. 22 MB
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A Dictionary of Birds enlists contributions from over 280 ornithologists and other specialists from around the world. Major, authoritative articles cover the field of modern ornithology and related subjects, many of them running to several thousand words. In addition there are articles on all the bird families, almost all of which are illustrated by a representative species. There are also numerous short entries defining special terms, application of names, etc. The total gives a text of over 800,000 words, supported by more than 500 photographs, drawings and diagrams. The photographs have been selected under the guidance of Eric Hosking to illustrate different activities of birds, and Robert Gillmor has assembled a collection of over 200 drawings of birds, almost all of which were specially drawn for the Dictionary. Compiled for the British Ornithologists' Union, this new work is in line of succession from Newton's A Dictionary of Birds of 1896 and Landsborough Thomson's A New Dictionary of Birds published in 1964 (2nd impression 1965) and now long out of print. This new dictionary, encyclopaedic in treatment, is destined to be a major reference in any ornithologist's library; and its editors and contributors, most of whom gave their time and knowledge freely, have earned the thanks and acclaim of users for many years to come. Frances James, President of the American Ornithologists' Union, writes in her preface of "the role the dictionary will play in fostering communications among nations. For students it will serve as an entrance to the present status of the field. For scientists it will serve as a research tool and a bridge between disciplines."

Life

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ISBN :
Genre :
File Size : 45. 49 MB
Format : PDF
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LIFE Magazine is the treasured photographic magazine that chronicled the 20th Century. It now lives on at LIFE.com, the largest, most amazing collection of professional photography on the internet. Users can browse, search and view photos of today’s people and events. They have free access to share, print and post images for personal use.

Beaks Bones And Bird Songs

Author : Roger Lederer
ISBN : 9781604696486
Genre : Nature
File Size : 64. 35 MB
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“Reveals the strange and wondrous adaptations birds rely on to get by.” —National Audubon Society When we see a bird flying from branch to branch happily chirping, it is easy to imagine they lead a simple life of freedom, flight, and feathers. What we don’t see is the arduous, life-threatening challenges they face at every moment. Beaks, Bones, and Bird Songs guides the reader through the myriad, and often almost miraculous, things that birds do every day to merely stay alive. Like the goldfinch, which manages extreme weather changes by doubling the density of its plumage in winter. Or urban birds, which navigate traffic through a keen understanding of posted speed limits. In engaging and accessible prose, Roger Lederer shares how and why birds use their sensory abilities to see ultraviolet, find food without seeing it, fly thousands of miles without stopping, change their songs in noisy cities, navigate by smell, and much more.

Birds In Flight

Author : W. P. Pycraft
ISBN : 9783730990988
Genre : Nature
File Size : 84. 26 MB
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THERE are hosts of people who have a genuine love of our native birds without yearning to possess their skins, or desiring to acquire the reputation of being "Ornithologists." They would call them all by name if they could, but seek, alas! In vain, for some book wherein they will find some magic phrase which will enable them to identify every bird they meet by the wayside.

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