ravens in winter

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Ravens In Winter

Author : Bernd Heinrich
ISBN : 9781476794570
Genre : Science
File Size : 50. 11 MB
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“One of the most interesting discoveries I’ve seen in animal sociobiology in years.” —E.O. Wilson Why do ravens, generally understood to be solitary creatures, share food between each other during winter? On the surface, there didn’t appear to be any biological or evolutionary imperative behind the raven’s willingness to share. The more Bernd Heinrich observed their habits, the more odd the bird’s behavior became. What started as mere curiosity turned into an impassioned research project, and Ravens In Winter, the first research of its kind, explores the fascinating biological puzzle of the raven’s rather unconventional social habits. “Bernd Heinrich is no ordinary biologist. He’s the sort who combines formidable scientific rigor with a sense of irony and an unslaked, boyish enthusiasm for his subject, and who even at his current professorial age seems to do a lot of tree climbing in the line of research.” —David Quammen, The New York Times

Winter Raven

Author : Adam Baker
ISBN : 9781910859827
Genre : Fiction
File Size : 84. 30 MB
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One rogue Samurai will sacrifice everything – apart from his honour As Japan’s factions head to war, this extraordinary new historical fiction series takes us into the heart of life as a Samurai Japan’s warlords are on the march and nothing is as it appears. After a failed assassination attempt on the Emperor, an anonymous samurai is coerced into a suicide mission that will test his skills to the limit. He must face this challenge for his young charge, a girl who is the last remainder of his duty. The samurai and the girl must journey to a far and impregnable mountain fortress, fighting off threats and dangers on the way. The girl, knowing no other life, hopes to learn all she can of the ways of the warrior. But they do not travel alone. The hunters are also the hunted. In Winter Raven, the first in an epic and engrossing new historical series, written in spare and precise prose, we are transported to an incredible time and place in history. Brutal, tense and action-packed, Winter Raven is sure to appeal to readers of James Clavell, Bernard Cornwell and Ben Kane. Path of the Samurai Winter Raven Raven's Sword

Ten Rowdy Ravens

Author : Susan Ewing
ISBN : 9780882406060
Genre : Juvenile Fiction
File Size : 34. 70 MB
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With rhyming text, teaches the numbers one through ten by describing the plight of ten naughty ravens who, due to constant mishaps, continually reduce their number by one.

Ravensong

Author : Catherine Feher-Elston
ISBN : 9781101153451
Genre : Nature
File Size : 90. 83 MB
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Birds of mystery, intelligence, and curiosity, ravens and crows have fascinated humans for untold centuries. In this first in a series of beautifully illustrated books that celebrate the power and beauty of the animal kingdom, Catherine Feher-Elston considers the raven in the contexts of mythology, folklore, history, and science. From the raven's role as trickster in Native American religion to his ability to captivate ornithologists and biologists with his intriguing behaviors, Ravensong pays tribute to the elegance and grandeur of two of America's most ubiquitous avian species.

Evolution And The Emergent Self

Author : Raymond L. Neubauer
ISBN : 9780231521680
Genre : Science
File Size : 45. 75 MB
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Evolution and the Emergent Self is an eloquent and evocative new synthesis that explores how the human species emerged from the cosmic dust. Lucidly presenting ideas about the rise of complexity in our genetic, neuronal, ecological, and ultimately cosmological settings, the author takes readers on a provocative tour of modern science's quest to understand our place in nature and in our universe. Readers fascinated with "Big History" and drawn to examine big ideas will be challenged and enthralled by Raymond L. Neubauer's ambitious narrative. How did humans emerge from the cosmos and the pre-biotic Earth, and what mechanisms of biological, chemical, and physical sciences drove this increasingly complex process? Neubauer presents a view of nature that describes the rising complexity of life in terms of increasing information content, first in genes and then in brains. The evolution of the nervous system expanded the capacity of organisms to store information, making learning possible. In key chapters, the author portrays four species with high brain:body ratios—chimpanzees, elephants, ravens, and dolphins—showing how each species shares with humans the capacity for complex communication, elaborate social relationships, flexible behavior, tool use, and powers of abstraction. A large brain can have a hierarchical arrangement of circuits that facilitates higher levels of abstraction. Neubauer describes this constellation of qualities as an emergent self, arguing that self-awareness is nascent in several species besides humans and that potential human characteristics are embedded in the evolutionary process and have emerged repeatedly in a variety of lineages on our planet. He ultimately demonstrates that human culture is not a unique offshoot of a language-specialized primate, but an analogue of fundamental mechanisms that organisms have used since the beginning of life on Earth to gather and process information in order to buffer themselves from fluctuations in the environment. Neubauer also views these developments in a cosmic setting, detailing open thermodynamic systems that grow more complex as the energy flowing through them increases. Similar processes of increasing complexity can be found in the "self-organizing" structures of both living and nonliving forms. Recent evidence from astronomy indicates that planet formation may be nearly as frequent as star formation. Since life makes use of the elements commonly seeded into space by burning and expiring stars, it is reasonable to speculate that the evolution of life and intelligence that happened on our planet may be found across the universe.

Winter Bees Other Poems Of The Cold

Author : Joyce Sidman
ISBN : 9780544465077
Genre : Juvenile Nonfiction
File Size : 34. 47 MB
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In this outstanding picture book collection of poems by Newbery Honor-winning poet, Joyce Sidman (Song of the Water Boatman, Dark Emperor and Other Poems of the Night), discover how animals stay alive in the wintertime and learn about their secret lives happening under the snow. Paired with stunning linoleum print illustrations by Rick Allen, that celebrate nature's beauty and power.

The Raven

Author : Derek Ratcliffe
ISBN : 9781408146132
Genre : Science
File Size : 43. 38 MB
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Well-known throughout the Northern Hemisphere, the raven has a prominent place in myth, legend and history. Focusing on the raven's ecology in the UK, this text presents a summary of the state of knowledge regarding the raven's natural history, describing its present distribution, habitat requirements, call, feeding habits, social behaviour and population centres. An emphasis is placed on the long association of the bird with humans, and useful comparisons of the Northern Hemisphere species are made.

Made For Each Other

Author : Ronald M. Lanner
ISBN : 0198024975
Genre : Science
File Size : 24. 35 MB
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Some trees and birds are made for each other. Take, for example, the whitebark pine, a timberline tree that graces the moraines and ridgetops of the northern Rockies and the Sierra Nevada-Cascades system. This lovely five-needled pine, long-lived and rugged though it is, cannot reproduce without the help of Clark's nutcracker. And the nutcracker, though it captures insects in the summer and steals a bit of carrion, cannot raise its young in these alpine habitats without feeding them the nutritious seeds of the whitebark pine. Between them, these dwellers of the high mountains provide for each others' posterity, which leads biologists to label their relationship symbiotic, or mutualistic. But there is more to it than that, because in playing out their roles these partners change the landscape. The environment they create provides life's necessities to many other plants and animals. Working in concert, Clark's nutcracker and the whitebark pine build ecosystems. In Made for Each Other: A Symbiosis of Birds and Pines, Ronald M. Lanner details for the first time this fascinating relationship between pine trees and Corvids (nutcrackers and jays), showing how mutualism can drive not only each others' evolution, but affect the ecology of many other members of the surrounding ecosystem as well. Lanner explains that many of the world's pines have seeds not adapted to wind dispersal. Fortunately, their seeds are harvested from the cone and scattered over many miles by seed-eating jays and nutcrackers who bury millions of seeds in the soil as a winter food source. Remarkably, these "pine nut" dependent birds can find their caches even through deep snow. Seeds left in the soil germinate, perpetuating the pines and guarantee future seeds for future birds. Moreover, the newly "planted" whitebark pine groves encourage further tree growth, such as Engelmann spruce, and eventually the patches of open-grown woodland coalesce, forming a continuous forest. Large forest stands offer cover for large animals like bear, elk, and moose, and provide territories for Red Squirrels. These squirrels also depend on pine seeds as a food source, storing large quantities of seeds on the ground, piled up against fallen logs or stumps, or buried in the forest litter. In the fall both black and grizzly bears are preparing to hibernate and must increase their stores of body fat. The seeds of whitebark pine are large and very rich, containing sixty to seventy percent fat, and are an ideal food for this purpose. The large seed reserves created by the squirrels become a feasting ground for these bears. Meanwhile, the sun-loving trees shaded out by the maturing decay offer housing for cavity-nesters like woodpeckers and nuthatches, as well as a breeding ground for fungi which are eagerly devoured by mule deer and red squirrels in search of protein. Eventually, when the forest is ignited in one of the thunderstorms so common and so violent in the high country, an open area is created, attracting nutcrackers in need of a new cache site, and the cycle begins again. Focusing on the Rocky Mountains and the American Southwest, and ranging as far afield as the Alps, Finland, Siberia, and China, this beautifully illustrated and gracefully written work illuminates the phenomenon of co-evolution.

Queen Of The Wolves

Author : Tanith Lee
ISBN : 9781473206304
Genre : Fiction
File Size : 23. 20 MB
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Leaving the Rise, Claidi anticipates a joyful reunion with her beloved Argul. Instead, her return to the Hulta people meets only mistrust, fury and betrayal. Determined to unravel the lies and deceit which haunt her past and threaten her future, she journeys northward. But in the strange cities-and even stranger people-she finds, Claidi sees only more mystery and deeper secrets.

The American Crow And The Common Raven

Author : Lawrence Kilham
ISBN : 0890964661
Genre : Nature
File Size : 76. 37 MB
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Lawrence Kilham was a Fellow of the American Ornithologists' Union, professor of microbiology emeritus of Dartmouth Medical School, and a distinguished virologist. He passed away in 2000. "This definitive study is a gem for both American birders and serious ornithologists." --The Indianapolis News " . . . remarkable behaviors are reviewed and discussed with a rich assortment of anecdotes from the author's 8,000 hours of field observations. . . . This book explains especially the social systems of these birds, from cooperative breeding to predator mobbing. Difficult topics such as 'play' and 'thinking' in crows are interestingly and critically presented. . . . an appealing volume." --Choice " . . . his book is one of the best, most informative and engaging ones yet written about how some of these birds live, think, and feel. Kilham on crows compares favorably with Tinbergen on gulls, Goodall on chimpanzees, and Lorenz on dogs and jackdaws." --Smithsonian "The book has style and is outstanding in many ways. . . . His method is remarkable: He refuses to intervene and does not even mark individual birds. His intensive observation of birds used to the observer, however, allow him to follow the behavior and fate of particular individuals carefully. --Journal fur Ornithologie "His interpretations and descriptions are also remarkable. --Journal fur Ornithologie . . . Study of the text promises to be profitable because the author is well-read and displays an outstanding style. Enjoyment of his book is enhanced by its makeup with generous layout and black-and-white pictures. . . . The book could be an incentive for European scientists to re-examine the social systems of crows and other corvids, keeping in mind different conditions of habitat and interpreting results in the light of evolutionary-biological hypotheses. Kilham himself takes an initial step in this regard in a special summarizing chapter." --Journal fur Ornithologie "Kilham's independent and somewhat unorthodox approach to research has particular value to amateur birders . . . The many citations in the text and an extensive list of references suggest Kilham has much confidence in his opinions and the 'chance observation' facts he reports. Readers will be motivated to rethink some conventional wisdom on how best to pursue studies of animal behavior. His research activities should inspire other retirees." --Jack DeForest "Kilham's work is a testament to the importance of amateurs to ornithology. . . . Amateurs will certainly enjoy his stories of interesting behaviors and exploits with pet corvids. The illustrations are wonderful and Kilham's insights into crow and raven sociality are important." --Auk "If you are interested in bird behaviour, you will enjoy reading this book. Joan Waltermire's sketches nicely complement the text." --C. Stuart Houston "This is a well-written, thoughtful, beautifully illustrated book that was a joy to read. . . . Kilham is to be congratulated for providing us with a greater level of insight into crows and ravens (particularly the former) than we previously had." --Quarterly Review of Biology " . . . simple, clear descriptive prose, a pleasure to read and fullof fascinating details of American crow and raven life. . . . This should be a prime book for collectors . . . beautifully illustrated in dramatic pen-and-ink drawings that even convey the glossiness of crows' and ravens' plumage." --Books about Birds " . . . an unusually detailed and sometimes inspiring account of the lives of the American Crow Corvus brachhrhrnchos and the Raven C. corax." --British Birds"

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