When we imagine birds, we think of them soaring through the sky, high above our heads—yet photographs of birds in the air are surprisingly rare. On Feathered Wings features the work of seven photographers who have spent their lives camping out, donning waders, and lying in wait for the greatest shots of birds doing what they do best: flying! Selected by birder and photographer Richard Ettlinger, these gorgeous, often thrilling images show hunters, migrators, waterfowl, and songbirds living on the wing: hunting, feeding, fighting, traveling, or just gliding along. An essay by Ettlinger gives an overview of the mechanics and evolution of bird flight. From falcons and eagles to swallows and hummingbirds, On Feathered Wings serves up a rich collection of images that is sure to delight birders both novice and veteran, and anyone who has ever looked to the skies in wonder.
This book outlines the principles of flight, of birds in particular. It describes a way of simplifying the mechanics of flight into a practical computer program, which will predict in some detail what any bird, real or hypothetical, can and cannot do. The Flight program, presented on the companion website, generates performance curves for flapping and gliding flight, and simulations of long-distance migration and accounts successfully for the consumption of muscles and other tissues during migratory flights. The program is effectively a working model of a flying bird (or bat or pterosaur) and is the skeleton around which the book is built. The book provides a wider background and then explains how Flight works and shows how to set up and test hypotheses generated by the program. The book and the program are based on adapting the conventional (and well-tested) thinking of aeronautical engineers to the biological problems of bird flight. Their primary aim is to convince biologists that this is the appropriate way to handle problems that involve flight, to make the engineering background accessible to biologists, and to provide a tool kit in the shape of the Flight program, which they can use to solve practical problems involving bird flight and migration. In addition, the book will be readily accessible to engineers who want to know how birds work, and should be of interest to the ever-growing community working on flapping "micro air vehicles" (MAVs). The program can be used to predict the flight performance and capabilities of reconstructed fossil birds and pterosaurs, flying in ancient atmospheres that differ from present conditions, and also, of course, to predict and account for the results of experiments and observations on living birds and bats. * An up to date work by the world's leading expert on bird flight * Examines the biology and biomechanics of bird flight with added reference to the flight of bats and pterosaurs. * Uses proven aeronautical principles to help solve biological issues in understanding and predicting the flight capabilities of birds and other vertebrates. * Provides insights into the evolution of flight and the likely capabilities of extinct birds and reptiles. * Gives a detailed explanation of the science behind, and use of, the author's predictive bird flight simulation program - Flight - which is available on a companion website. * Presents often difficult concepts in easily understood language.
Avian Flight covers all the main aspects of aerial locomotion by birds including sections on the history of thinking about bird flight, aerodynamics, functional morphology, evolution, kinematics, physiology, energetics and the cost of flight. The subject is complex and still not yet fully understood, and the author argues a convincing case for rethinking or even abandoning some of the old, well-established concepts.
This book will take you on an exciting journey made up of texts and images. Spectacular, large-scale photographs printed on double pages and accompanied by explanatory texts will arouse the reader’s curiosity about evolution’s accomplishments in the world of flying: from the botanical air fleet (pollen grains, flying seeds...), over flying snakes and fish, to penguins flying underwater and humans rising into the air.Mathematician and passionate animal photographer Georg Glaser has joined forces with the experienced evolutionary biologist Hannes Paulus and the exercise physiologist and flight biophysicist Werner Nachtigall in order to approach this topic with words and pictures in a way that is both generally comprehensible and scientifically sound. Double-page by double-page, the book can be read in any order. Cross-references allow to jump easily from one double-page to another. Aside from the detailed introduction to each chapter, the text passages are usually independent from one another, and they discuss crucial moments in the evolutionary process. The double-pages provide additional information on bibliographical references and references to informative websites.
J.N. Coldstream has now fully updated his comprehensive survey with a substantial new chapter on the abundant discoveries and developments made since the book's first publication. The text is presented in three main sections: the passing of the dark ages, c.900–770 BC; the Greek renaissance, c.770–700 BC, covered region by region, and the final part on life in eighth century Greece. Its geographical coverage of the Mediterranean ranges from Syria to Sicily, and the detailed archaeological evidence is amplified by reference to literary sources. Highly illustrated, including images of several finds never previously published, this follows the first successful edition as the essential handbook for anyone studying early Greek antiquity.
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. -- Alan Feduccia, University of North Carolina
This resource has separate books for biology, chemistry and physics. Each book is accompanied by a teacher's resource pack on customizable CD-ROM or as a printed pack. The series is designed to work in conjunction with the Coordinated Science for AQA series, so that coordinated and separate science can be taught alongside each other.
The new edition of Blood’s classic Comprehensive Veterinary Dictionary has been completely redesigned, revised and updated for today’s veterinary team. Now with a wide range of superb full-colour illustrations, well over 60,000 main and subentries including large animals, small animals and exotics, and an all-new, user-friendly format, the fourth edition offers the most comprehensive dictionary reference in the field. Comprehensive text covering the whole range of veterinary medicine Classic authoritative reference work Valuable and accessible appendices for instant access to key information at a glance Well over 60,000 main entries and subentries Extensive contributions from internationally acknowledged expert consultants New for this edition Over 1,000 colour illustrations to aid further understanding of disease processes and important terminology Pronunciation of key terms Brand new design and format to help find key information at a glance Extensive revision, clarification and focussing of entries to reflect current practice