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Author : Lars Chr Lund-Hansen,Peter Lange
Publisher : Unknown
Page : 26 pages
File Size : 54,7 Mb
Release : 1991
Category : Great skua
ISBN : STANFORD:36105008977956
Author : Robert W. Furness
Publisher : A&C Black
Page : 366 pages
File Size : 52,8 Mb
Release : 2010-10-30
Category : Nature
ISBN : 9781408136683
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 : Valerie M. Thom
Publisher : Bloomsbury Publishing
Page : 391 pages
File Size : 44,9 Mb
Release : 2010-11-30
Category : Nature
ISBN : 9781408138359
'The most important work on the birds of Scotland ever published' - British Birds This comprehensive study and review of the birds in Scotland follows on from where the celebrated two volumes of The Birds of Scotland (1953), by Dr Baxter and Miss Rintoul, left off. It does more than that, however, since not only has there been a profound increase in ornithological coverage and data (as reflected in the species accounts), there have also been great changes in habitat and environment since the days of Baxter & Rintoul. These aspects form the themes of the ten preliminary chapters reviewing the Scottish scene today in terms of habitat, conservation, birdwatching and the changes in species status and distribution. The species accounts, the backbone of the book, review the period 1950-83 but include, where practicable, records of rarities and details of counts up to the spring of 1985; there are also brief summaries of earlier data based on the researches of Baxter & Rintoul. In all, 497 species are dealt with. The texts of major species accounts are complemented by 173 distribution maps and many tables of relevant data, and there are 129 species drawings by a team of artists under the editorship of Donald Watson, who also contributes chapter head pieces and other drawings. A section of photographs illustrates the varied habitats typical of Scotland today. There are, further, appendices and an extensive bibliography. The book will be of great interest to all birdwatchers in Scotland but of special value, too, to the many thousands of birdwatching visitors from elsewhere in these islands and from countries abroad. The Scottish Ornithologists' Club, for whom the book is published, and all whose records and researches made the author's work possible, have reason to be proud of Valerie Thom's achievement.
Author : Klaus Malling Olsen
Publisher : A&C Black
Page : 191 pages
File Size : 47,6 Mb
Release : 2013-09-05
Category : Nature
ISBN : 9781408189078
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 : Mark Nuttall
Publisher : Routledge
Page : 2306 pages
File Size : 42,6 Mb
Release : 2005-09-23
Category : Reference
ISBN : 9781136786808
With detailed essays on the Arctic's environment, wildlife, climate, history, exploration, resources, economics, politics, indigenous cultures and languages, conservation initiatives and more, this Encyclopedia is the only major work and comprehensive reference on this vast, complex, changing, and increasingly important part of the globe. Including 305 maps. This Encyclopedia is not only an interdisciplinary work of reference for all those involved in teaching or researching Arctic issues, but a fascinating and comprehensive resource for residents of the Arctic, and all those concerned with global environmental issues, sustainability, science, and human interactions with the environment.
Author : Anonim
Publisher : Unknown
Page : 340 pages
File Size : 42,8 Mb
Release : 1999
Category : Ammodytes
ISBN : MINN:31951D02881915P
Author : Anonim
Publisher : Unknown
Page : 344 pages
File Size : 51,7 Mb
Release : 1978
Category : Forests and forestry
ISBN : UCBK:C069128091
Author : J.T.R. Sharrock
Publisher : A&C Black
Page : 480 pages
File Size : 51,6 Mb
Release : 2010-12-30
Category : Nature
ISBN : 9781408146958
The Atlas plots the results of the survey organised by the BTO and the IWC during the years 1968-72. Over 250 maps show the distribution of 218 species. This companion volume to The Atlas of Wintering Birds in Britain and Ireland is derived from yearly surveys of breeding birds in Britain and Ireland during 1968-72, organised by the British Trust for Ornithology and the Irish Wildbird Conservancy. Each of the 3,862 10-km squares of Britain and Ireland was visited during the five years and the resulting records (over 285,000) are summarised in the maps. The full-page maps plot the known distribution of all but 11 of the 229 breeding species located during the survey period. Each map has an accompanying text which describes the species' habitat, the problems involved in proving breeding, the historical background to the species' range and any changes in its numbers. The probable reasons for these changes are discussed and an attempt made to assess the total number of birds for each species. Jacket design by Robert Gillmor.
Author : Clare Lloyd,Mark L. Tasker,Ken Partridge
Publisher : A&C Black
Page : 374 pages
File Size : 41,7 Mb
Release : 2010-10-30
Category : Nature
ISBN : 9781408137987
The Status of Seabirds in Britain and Ireland book presents the most up-to-date information available on these seabird populations, their numbers and distribution, and their changing fortunes in recent years. The oceanographic and coastal features of the British Isles provide a wealth of ideal habitats for breeding seabirds and it is no surprise that the British and Irish seabird populations are of international importance, both in sheer numbers and in species diversity. Indeed, for some species British waters are host to the greater part of the world's population. The Operation Seafarer survey, carried out in 1969-70, provided a baseline for future work that led to the establishment of the Seabird Colony Register by the Seabird Group and the Nature Conservancy Council. The results and analysis of their counts during 1985-87 form the basis for this book. Improved census methodology and a new computerised database has set the standards for seabird monitoring in future decades. In Part 1 the general biology and population trends of British seabirds are described to set the scene for Part 2, in which the results and analysis for each of the 24 breeding species are given in detail. Full descriptions of the counting methods and the estimating factors used provide guidelines for future surveys not only in Britain, but wherever seabirds are of interest and importance. No-one with an interest in seabirds or conservation can afford to be without this authoritative book, nor but be grateful to the small army of professionals and amateurs who have so ably explored our coastal habitats. Illustrated by Keith Brockie.
Author : L.A Batten,C.J Bibby,P. Clement,G.D Elliott,R.F Porter
Publisher : A&C Black
Page : 358 pages
File Size : 55,9 Mb
Release : 2013-06-27
Category : Nature
ISBN : 9781408137758
The various Red Data Books prepared by the IUCN and ICBP have set the standards for recognizing birds close to or at risk of extinction worldwide. This book, by focusing on vulnerable species living in or visiting Britain, sets out to define the British situation and to clearly establish both the importance of British populations and our own responsibilities for contributing to bird conservation. Compiled by an editorial team drawn from the Nature Conservancy Council and the Royal Society for the Protection of Birds, it identifies 117 species that demand our care and attention. It includes species that breed in or visit Britain in small numbers and whose populations are threatened by natural or man-made circumstances. It also deals with birds that are common or numerous but which, due to their localized distribution worldwide, have the greater part of their European populations in British sites. Each of the species accounts provides up-to-date information on current populations, basic ecology, threats to the species and the legal protection and conservation measures now in force. General chapters deal with the state of Britain's various habitats, legal matters and conservation action for the future. This book should mean that no-one, whether ornithologist, land manager or bureaucrat, can plead ignorance when future land-use changes or management decisions threaten an endangered, vulnerable or important bird species. Illustrated by Ian Willis.
Author : U.S. Fish and Wildlife Service
Publisher : Unknown
Page : 1020 pages
File Size : 54,8 Mb
Release : 1954
Category : Animals
ISBN : OSU:32435025997503
Author : Marianne Taylor
Publisher : Bloomsbury Publishing
Page : 242 pages
File Size : 52,6 Mb
Release : 2016-07-28
Category : Nature
ISBN : 9781472943804
A lavish celebration of the seabirds of the British Isles. Seabirds are the living links between land, air and sea. They enjoy a freedom that even humans, with all our technological assistance, can barely imagine. Many species travel mind-boggling distances across the length and breadth of our planet before returning to land to breed in large, deafening and confusingly crowded colonies. Yet within this commotion each mated pair forms a bond of extreme closeness and tenderness that survives separation each winter and may persist for decades. The long and geologically varied coastline of the British Isles provides homes for internationally important numbers of breeding seabirds. Visiting their colonies is always unforgettable, whether they are cliff-faces packed with Guillemots, islands white-capped by clustered Gannets on their nests, flat beaches crowded with screaming Arctic Terns or seaside rooftops overlaid with a second townscape of nesting gulls. The changing fortunes of these seabird cities reveal to us the health of the vast, unseen but incredibly rich marine world that surrounds us. RSPB Seabirds showcases some of our most exciting and enigmatic bird species as vital and living components of one of our greatest natural assets: our coastline. The author presents detailed biographies of all the seabird species that breed in and around the British Isles, and also looks at the many species that breed elsewhere but which, regularly or occasionally, visit British waters. Every page of this sumptuous book features beautiful photographs of wild seabirds engaged in their daily work of hunting, travelling, protecting themselves and their territories, courting and raising a family.
Author : J. Bryan Nelson
Publisher : OUP Oxford
Page : 680 pages
File Size : 46,8 Mb
Release : 2006-01-26
Category : Science
ISBN : 9780191547263
The pelecaniformes are a large and important group of seabirds, containing many spectacular species. This book addresses the breeding biology of the six pelecaniform families, which comprise the closely-related core groups (pelicans, cormorants/shags, darters, gannets/boobies) and their more distant relatives, the frigate birds and tropic birds. Many fundamental questions can be addressed through the pelecaniformes: Why do they breed in colonies? What are the links between their feeding methods and their reproduction? What part does territorial and pairing behaviour play in their life-cycles? These and scores of comparable issues, including those related to man, are woven here into a richly interpretative text. The author's approach to the subject is threefold. First, the pelecaniformes are placed within the framework of four discrete disciplines, with chapters on evolutionary relationships, comparative behaviour, ecology, and the birds' relationship with humans. Secondly, each of the six families is discussed, elucidating the range of taxonomy, behaviour, and ecology within each. Finally, we progress to specific level, using the same structure as for the family accounts. In this way, each of the 60-odd species can be understood not just as discrete units, but as part of their family and order. The book is unique in its coverage of the entire order and in its combination of facts and interpretation. Pelicans, Cormorants, and their Allies will enable readers not only to identify the many spectacular species which make up this large and important group of seabirds, but also to understand their breeding biology.
Author : Nordisk Ministerråd
Publisher : Nordic Council of Ministers
Page : 99 pages
File Size : 40,5 Mb
Release : 2006
Category : Sea birds
ISBN : 9789289313018
Internationally important seabird resources are found in the Nordic countries (Greenland, Faeroes, Iceland, Jan Mayen, and Svalbard). To fulfill a recommendation of the Arctic Nordic Action Plan 1999, a project was carried out to harmonize databases for seabird colonies. Number of seabird species in these countries is 30, the number of colony sites may be 10,000, often more than one species at same site, and the total breeding pairs is estimated c. 50 million. A harmonized database format for seabird colonies was established, with 3 main tables, colony descriptions, colony survey data, study plot information. Linked are tables with references, observers, and photo documentation. The program can be downloaded free from: ftp://ftp.npolar.no/Out/Hallvard/. The manual is in the report appendix. The format harmonization is the first step in work on seabird colony databases. Harmonization enables common analyses over larger regions than hitherto possible, e.g. scientific assessments of species (colony details, geographic location, colony size, trend data, etc.) and conservation status overviews. Seabird colony data need to be incorporated into conservation policies. The databases are only as good as the data stored, many colonies remain unregistered, not censused, and fieldwork needs to be intensified. Each country maintains, updates, and corrects their databases, adding details lacking (habitat type, colony distribution, conservation status, land ownership, etc.).
Author : W.J. Wolff,J. van der Land,P.H. Nienhuis,P.A.W.J. de Wilde
Publisher : Springer Science & Business Media
Page : 224 pages
File Size : 40,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401119863
This volume on the ecology of Mauritanian coastal waters and in particular the Banc d'Arguin, allows us to understand the functioning of this remarkable coastal wetland. Major questions concern the interaction between the Banc d'Arguin ecosystem on the one hand and the adjoining systems of the open ocean with its intensive upwelling phenomena and the Sahara desert on the other. Is the Banc d'Arguin ecosystem relatively isolated from its surroundings and does it function as a tropical pocket in a more temperate surrounding, as suggested by Sevrin-Reyssac (1983); or does it interact with both the Sahara and the Atlantic Ocean? At the Banc d'Arguin, the area between the estuarine parts and the open ocean is extremely shallow and largely uncharted. Large research vessels cannot penetrate the shallows, whereas small vessels are often unable to negotiate the outer part of the shallow area due to rough weather conditions. Hence, separate teams report on work at the seaward side of this shallow sill and at the landward side. In addition, other teams address different questions, such as the productivity of the seagrass beds and the benthic fauna, the number of birds spending the summer at the Banc d'Arguin, and the distribution of several taxonomic groups of flora and fauna.
