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Author: Robert W. Furness
Publisher: A&C Black
ISBN: 1408136686
Category : Nature
Languages : en
Pages : 366
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Book Description
A comprehensive monograph of the skua. Many birdwatchers may never have seen a skua; those who have will most probably have vivid memories of one or other species flying powerfully past a headland, or twisting and diving in pursuit of its piratical intentions towards a food-laden seabird - or, perhaps more memorably still, of themselves taking evasive action from the power-diving irate skua whose territory they have unwisely invaded. The full classification of the skuas is still debated, but Dr Furness of the Applied Ornithology Unit, Glasgow University, favours six species, of two genera, with five subspecies, based on current knowledge and his own long and dedicated field studies and research. All of the species are treated comparatively under the following chapter titles: Early history and classification, Distributions and populations, Migration patterns, Reversed sexual size dimorphism, Behaviour, Food and feeding, Kleptoparasitism, Plumage polymorphism, Breeding systems and social organisation, Breeding - laying to hatching, Breeding - hatching to fledging, Population dynamics, Pollutants, Skuas and agriculture, Skuas and conservation. The text is supported by 100 maps and diagrams, 30 photographs and 65 tables. In addition, John Busby contributes 35 evocative drawings which more than embellish this erudite and readable summary of an impressive and diverse group of birds. Jacket paintings by John Busby.
Author: Robert W. Furness
Publisher: A&C Black
ISBN: 1408136686
Category : Nature
Languages : en
Pages : 366
Get Book Here
Book Description
A comprehensive monograph of the skua. Many birdwatchers may never have seen a skua; those who have will most probably have vivid memories of one or other species flying powerfully past a headland, or twisting and diving in pursuit of its piratical intentions towards a food-laden seabird - or, perhaps more memorably still, of themselves taking evasive action from the power-diving irate skua whose territory they have unwisely invaded. The full classification of the skuas is still debated, but Dr Furness of the Applied Ornithology Unit, Glasgow University, favours six species, of two genera, with five subspecies, based on current knowledge and his own long and dedicated field studies and research. All of the species are treated comparatively under the following chapter titles: Early history and classification, Distributions and populations, Migration patterns, Reversed sexual size dimorphism, Behaviour, Food and feeding, Kleptoparasitism, Plumage polymorphism, Breeding systems and social organisation, Breeding - laying to hatching, Breeding - hatching to fledging, Population dynamics, Pollutants, Skuas and agriculture, Skuas and conservation. The text is supported by 100 maps and diagrams, 30 photographs and 65 tables. In addition, John Busby contributes 35 evocative drawings which more than embellish this erudite and readable summary of an impressive and diverse group of birds. Jacket paintings by John Busby.
Author: Klaus Malling Olsen
Publisher: A&C Black
ISBN: 1408135124
Category : Nature
Languages : en
Pages : 191
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Book Description
This is the first complete identification guide to the skuas of the world. Skuas (and jaegers) are a fascinating and popular group of seabirds that make up a subfamily of just seven species. They can be divided into two main groups: the larger species of Catharacta skuas which are mainly found in the southern hemisphere (with Great Skua breeding in the north), and the three Stercorarius species (also known as jaegers) which breed in the northern hemisphere. Both northern and southern skuas breed at high latitudes and several species are long-distance migrants, performing spectacular migrations through most of the world's oceans, sometimes even flying overland. The individual plumage variation in some species is enormous, creating one of the most puzzling yet fascinating challenges in modern field identification. This guide is designed to enable species identification and correct ageing, and the information presented is based on years of study in the field, detailed examination of photographs and museum skins, and extensive research of the relevant literature. The comprehensive text is accompanied by twelve exquisite colour plates by Hans Larsson, illustrating a wide range of plumages. In addition, there are eight pages of colour photographs and numerous black and white photographs and drawings that show key identification features. With this book, the seabird enthusiast should at last be able to identify almost every skua encountered, whether on a seawatch or at sea.
Author: Euan Young
Publisher: Cambridge University Press
ISBN: 0521322510
Category : Nature
Languages : en
Pages : 472
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Book Description
A detailed ecological study which overturns current thinking about the relationship between these two species.
Author: Klaus Malling Olsen
Publisher: A&C Black
ISBN: 1408189070
Category : Nature
Languages : en
Pages : 191
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Book Description
Skuas (and jaegers) are a fascinating and popular group of seabirds that make up a subfamily of just seven species. They can be divided into two main groups: the larger species of Catharacta skuas which are mainly found in the southern hemisphere (with Great Skua breeding in the north), and the three Stercorarius species (also known as jaegers) which breed in the northern hemisphere. Both northern and southern skuas breed at high latitudes and several species are long-distance migrants, performing spectacular migrations through most of the world's oceans, sometimes even flying overland. The individual plumage variation in some species is enormous, creating one of the most puzzling yet fascinating challenges in modern field identification. This is the first complete identification guide to the skuas of the world. It is designed to enable species identification and correct ageing, and the information presented is based on years of study in the field, detailed examination of photographs and museum skins, and extensive research of the relevant literature. The comprehensive text is accompanied by twelve exquisite colour plates by Hans Larsson, illustrating a wide range of plumages. In addition, there are eight pages of colour photographs and numerous black and white photographs and drawings that show key identification features. With this book, the seabird enthusiast should at last be able to identify almost every skua encountered, whether on a seawatch or at sea.
Author: Peter C. Smith
Publisher: Casemate Publishers
ISBN: 1783409711
Category : History
Languages : en
Pages : 401
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Book Description
The Blackburn Skua was the first monoplane to be designed and built for the Royal Navy in the 1930s. As a result of continued debate, it became a compromise between the Navys desire for a carrier-based dive-bomber and RAFs preference for a fighter. Despite being the first to shoot down a Luftwaffe aircraft in World War II, early operations in Norway found the type woefully inadequate as a fighter.As a dive-bomber, the Royal Navy put the design to good use from the outset of WWII. It was involved with the hunt for the Graff Spee, sunk the major warship Koln, suffered with great loss in an attack on the Scharnhorst, helped to keep the German advance at bay during the Dunkirk evacuation and attacked the French rogue battleship Richelieu in the Mediterranean.This book relates how the final design was created, how the dive-bombing technique was developed and perfected by naval pilots and traces the wartime operational career of the type with many first-hand accounts.
Author: J. J. Dalgleish
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
Author: Dietland Muller-Schwarze
Publisher: State University of New York Press
ISBN: 1438413866
Category : Psychology
Languages : en
Pages : 216
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Book Description
"Strange geese." That was their description when they were discovered in 1520 during Magellan's historic voyage. Today, penguins are familiar to everyone, yet few researchers have observed them in the remote regions in which they live. Written by an ecologist-behaviorist who has worked extensively in the natural penguin habitat, The Behavior of Penguins is the first general work on the entire family of penguins. Numerous and remarkable field photographs document the author's detailed study of the life cycles and breeding patterns of each penguin species. He brings to light their unusual abilities to go with little food for months, to dive deep in the ocean, and to protect themselves in extreme environments. Müller-Schwarze's comprehensive and fascinating account of penguins also emphasizes the urgent need to protect these birds and their natural habitat.
Author: Eugene Potapov
Publisher: A&C Black
ISBN: 1408172186
Category : Nature
Languages : en
Pages : 337
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Book Description
A comprehensive monograph of the beautiful Snowy Owl, famed for its elegant, all-white plumage. The Snowy Owl needs little introduction. This massive white owl breeds throughout the Arctic, wherever there are voles or lemmings to hunt, from Scandinavia through northern Russia to Canada and Greenland. Southerly movements in winter see North American birds travel as far south as the northern United States, while infrequent vagrants on the Shetlands and other northern isles are a magnet for birders. The Snowy Owl gives this popular bird the full Poyser treatment, with sections on morphology, distribution, palaeontology and evolution, habitat, breeding, diet, population dynamics, movements, interspecific relationships and conservation, supported by some fabulous photography. The award-winning author team also had access to Russian research literature, which is generally out of reach for Western scientists.
Author: David G. Campbell
Publisher: Houghton Mifflin Harcourt
ISBN: 0547527616
Category : Biography & Autobiography
Languages : en
Pages : 323
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Book Description
The acclaimed author and biologist shares “a superb personal account [of Antarctica] . . . a remarkable evocation of a land at the bottom of the world” (Boston Globe). During the 1980s, biologist David Campbell spent three summers in Antarctica, researching its surprisingly plentiful wildlife. In The Crystal Desert, he combines travelogue, nature writing and science history to tell the story of life's tenacity on the coldest of Earth's continents. Between scuba expeditions in Admiralty Bay, Campbell remembers the explorers who discovered Antarctica, the whalers and sealers who despoiled it, and the scientists who laid the groundwork to decipher its mysteries. Chronicling the desperately short summers in beautiful, lucid prose, he presents a fascinating portrait of the evolution of life in Antarctica and of the continent itself. Winner of the John Burroughs Medal for Natural History Writing and a Houghton Mifflin Literary Fellowship
Author: K.R. Kerry
Publisher: Springer Science & Business Media
ISBN: 3642840744
Category : Science
Languages : en
Pages : 428
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Book Description
Antarctic Ecosystems comprises 55 papers presented at the Fifth Symposium on Antarctic Biology held under the auspices of the Scientific Committee on Antarctic Research (SCAR) in Hobart, Australia, 29 August - 3 September, 1988. Both short- and long-term changes in ecosystems and community structures caused by natural and human factors were discussed to help understand the ecological processes taking place in a changing environment. The variability of ecological factors must be known for the development of realistic monitoring strategies and sound conservation practices.
