Download or read book Functional Significance of Ornamental Plumage in Red billed Queleas Quelea Quelea written by James Dale and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 2001 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bird Coloration written by Geoffrey Edward Hill and published by Harvard University Press. This book was released on 2006-03 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this sumptuously illustrated companion volume to Bird Coloration, Volume 1: Mechanisms and Measurements, the authors explain the function of the colorful displays of birds and examine the factors that shape the evolution of color signals.
Download or read book Proceedings written by and published by . This book was released on 2006 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2001 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Degree List written by Cornell University. Graduate School and published by . This book was released on 2001-05-27 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biology of Moult in Birds written by Lukas Jenni and published by Bloomsbury Publishing. This book was released on 2020-09-17 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Feathers are amazing structures unique to birds and, for a variety of reasons, they need to be renewed periodically as a whole in a process called moult. During this process, all of the functions of plumage are impaired and most aspects of a bird's life are affected. Every moult determines a bird's appearance anew, and restores plumage efficacy for flight and insulation. Moult profoundly affects physiology and the organization of the annual cycle, and it constrains reproduction and migration. Given these major impacts, which are equal to the other annual challenges of reproduction and migration, it is surprising that research on moult has largely been so neglected a subject. Lukas Jenni and Raffael Winkler have brought together the widely scattered results of studies on the processes and consequences of moult in birds. This book opens with an overview of the functions of plumage, and of feather maintenance and feather wear, and then introduces the two functions of moult: replacement of worn feathers and adjustment of plumage characteristics and appearance. The body of the book then examines feather-growth and the physiology, energetics and control of moult, and how various other physiological processes interact with moult and may compensate for its costs. Significantly, the authors explain how variations in moult and feather quality affect a bird's overall plumage quality, and they highlight the resulting consequences in terms of physical performance, appearance and signalling. Finally, there is a review of all the various solutions that birds have developed to fit moult into the annual cycle. This long-awaited book covers for the first time all aspects of the biology of moult and fills an important gap in the literature, completing our understanding of how the most important annual events in a bird's life fit together into a coherent whole. It draws on a wide range of information – from penguins to small passerines, from raptors to wildfowl – to highlight the variety of the subject and to pinpoint the many gaps in our knowledge along with avenues for fruitful further research.
Download or read book Animal Behaviour Abstracts written by and published by . This book was released on 2001 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Live Bird Trade in Tanzania written by R. K. Tibanyenda and published by IUCN. This book was released on 1996 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practice of keeping live birds in captivity has been widespread throughout this century and has increased considerably as the 20th century comes to a close. In the last decade or so, the increased trade in live birds from Tanzania has given rise to a number of concerns regarding the sustainability of the trade, its effects on bird numbers, and illegal trafficking. As part of its efforts to palliate the lack of legislation and planning in this domain and to evaluate the effects of this trade, in 1990 the Tanzanian government initiated the Planning and Assessment for Wildlife Management (PAWM) project. As part of this project, a workshop on the live bird trade in Tanzania was organized in Dar Es Salaam in December 1991 and gave rise to a series of initiatives. This publication provides a record of these initiatives and of the PAWN's efforts to arrive at and implement them. It also provides a record of the papers presented during the workshop and the recommendations that emerged therefrom.
Download or read book Cassell s Book of Birds written by Thomas Rymer Jones and published by BoD – Books on Demand. This book was released on 2023-10-18 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Future is an Ancient Lake written by Caterina Batello and published by Food & Agriculture Org.. This book was released on 2004 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This art book contains over 350 color photographs by Marzio Marzot, documenting information on traditional food production systems, scientific details and notes from a journey through one of the world' s outstanding region: the Lake Chad Basin in Africa. It provides an insight into the life and customs of the local farmers, fishermen and pastoralists who foster, maintain and utilize biodiversity in their traditional agricultural systems, thereby deploying the knowledge and techniques that they have accumulated over many centuries. FAO promotes the sharing of experiences and awareness related to the role of rural people in conserving and sustainably using agricultural biodiversity. Building on the local knowledge and social organization of farmers is indispensable. The images in this book are a tribute to the knowledge and work of farmers and their care for the land.
Download or read book Wildlife Resources written by Harald H. Roth and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general interest and attention paid to the use of the renewable natural resources of the world have increased greatly during the last decades. This is due to the environmental dilemma into which mankind has got itself by the total disregard of ecological facts and laws, the underprizing of natural resources and the overemphasis on economic develop ment, coupled with unimpeded rapid population growth and the preponderance of material istic consumption-oriented attitudes. The management and use of natural resources such as forests, grasslands, rivers and lakes were formerly considered purely in a financial context, whereas latterly, a consciousness of their social function and the indirect economic benefits which can be derived from them has developed. Thus, as regards these traditional resources, multi-use concepts comprising eco nomically oriented utilisation as well as recreational, educational and social use have be come widely accepted. Conservation of natural resources for sustainable consumptive as well as non-consumptive uses has been recognised as a key element for maintaining eco nomic development all over the world. Fortunately, the industrialised countries have started to apply this principle themselves and in their technical and financial aid to the developing Third World countries. This is manifest from policy documents such as the World Bank Policy on Development of Wild Lands, issued in 1987.
Download or read book Quelea Quelea written by Richard L. Bruggers and published by Oxford University Press, USA. This book was released on 1989 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Africa's quelea quelea is the most destructive--and most numerous--bird pest in the world. This volume brings together available information on quelea quelea ecology and management, as well as the species' distribution, population, migration patterns, and breeding behavior. Utilizing an international team of authors, this new book also offers guidance on monitoring and marketing, and methods of control of this extraordinary animal.
Download or read book Social Recognition in Invertebrates written by Laura Aquiloni and published by Springer. This book was released on 2015-05-29 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book uses a wide range of case studies from different invertebrate taxa to describe the numerous forms of social recognition occurring in this large group of animals and traces the evolution of this cognitive ability. The authors provide several examples of direct (i.e. the target of recognition is a conspecific) and indirect recognition (i.e. recognition of a reliable proxy rather than an individual, such as a den or a substrate) and discuss cases of familiar recognition (i.e. an animal remembers a conspecific but cannot tell what class it comes from or recognize its identity). Class-level recognition (i.e. an animal assigns a conspecific to an appropriate class of animals), and true individual recognition (i.e. an animal both identifies and recognizes a conspecific on an individual basis) are also addressed.
Download or read book Why Birds Matter written by Çagan H. Sekercioglu and published by University of Chicago Press. This book was released on 2016-08-24 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: For over one hundred years, ornithologists and amateur birders have jointly campaigned for the conservation of bird species, documenting not only birds’ beauty and extraordinary diversity, but also their importance to ecosystems worldwide. But while these avian enthusiasts have noted that birds eat fruit, carrion, and pests; spread seed and fertilizer; and pollinate plants, among other services, they have rarely asked what birds are worth in economic terms. In Why Birds Matter, an international collection of ornithologists, botanists, ecologists, conservation biologists, and environmental economists seeks to quantify avian ecosystem services—the myriad benefits that birds provide to humans. The first book to approach ecosystem services from an ornithological perspective, Why Birds Matter asks what economic value we can ascribe to those services, if any, and how this value should inform conservation. Chapters explore the role of birds in such important ecological dynamics as scavenging, nutrient cycling, food chains, and plant-animal interactions—all seen through the lens of human well-being—to show that quantifying avian ecosystem services is crucial when formulating contemporary conservation strategies. Both elucidating challenges and providing examples of specific ecosystem valuations and guidance for calculation, the contributors propose that in order to advance avian conservation, we need to appeal not only to hearts and minds, but also to wallets.
Download or read book Fish and Game Code written by California and published by . This book was released on 1915 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Illustrated Encyclopedia of Birds written by DK and published by Dorling Kindersley Ltd. This book was released on 2011-03-01 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: The beauty and drama of the bird world brought to breathtaking life in ebook format From hummingbirds weighing less than a coin to monkey-eating eagles this is a unique celebration of birds, photographed and studied in their natural environments around the world. Explore the complete bird story: from their origins to up-to-date information on flight, anatomy, feeding, communication, breeding, habitat, migrations and life cycles. Spectacular features on the most impressive birds, plus a huge catalogue that profiles nearly fifteen hundred different species makes this a must-have for every bird enthusiast. Published with Birdlife International, the world's leading avian authority.
Download or read book Molecular Ecology written by Joanna R. Freeland and published by John Wiley & Sons. This book was released on 2006-03-30 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Ecology provides a comprehensive introduction to the many diverse aspects of this subject. The book unites theory with examples from a wide range of taxa in a logical and progressive manner, and its accessible writing style makes subjects such as population genetics and phylogenetics highly comprehensible to its readers. The first part of the book introduces the essential underpinnings of molecular ecology, starting with a review of genetics and a discussion of the molecular markers that are most frequently used in ecological research. This leads into an overview of population genetics in ecology. The second half of the book then moves on to specific applications of molecular ecology, covering phylogeography, behavioural ecology and conservation genetics. The final chapter looks at molecular ecology in a wider context by using a number of case studies that are relevant to various economic and social concerns, including wildlife forensics, agriculture, and overfishing * comprehensive overview of the different aspects of molecular ecology * attention to both theoretical and applied concerns * accessible writing style and logical structure * numerous up-to-date examples and references This will be an invaluable reference for those studying molecular ecology, population genetics, evolutionary biology, conservation genetics and behavioural ecology, as well as researchers working in these fields.
