Curassows and Related Birds - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Curassows and Related Birds write by Jean Delacour. This book was released on 1973. Curassows and Related Birds available in PDF, EPUB and Kindle. For review see: François Haverschmidt, in Ardea, jrg. 62 (1974); p. 140-141.
Curassows, Guans and Chachalacas
Curassows, Guans and Chachalacas - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Curassows, Guans and Chachalacas write by Cracid Specialist Group. This book was released on 2000. Curassows, Guans and Chachalacas available in PDF, EPUB and Kindle. Curassaows, Guans, and Chachalacas: Status Survey and Conservation Action Plan for Cracids 2000-200
Trogons
Trogons - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Trogons write by Joseph Michael Forshaw. This book was released on 2009. Trogons available in PDF, EPUB and Kindle. This is the definitive natural history of the spectacularly beautiful tropical birds known as the trogons, a family that includes the legendary Resplendent Quetzal, the sacred bird of the ancient Mayans and Aztecs. A collaboration between renowned ornithologist Joseph Forshaw and eminent bird artist Albert Gilbert, Trogons combines science and art to create an unprecedented picture of a threatened bird family. Forshaw's text provides the most authoritative and comprehensive account of the trogons ever written, and Gilbert's stunning paintings are the first to accurately depict all species of trogons in their natural habitats and true colors. The book's detailed synthesis of current knowledge about the trogons is enriched by Forshaw's personal field observations in the tropical rainforests of Southeast Asia, Africa, and the Americas, while Gilbert's meticulous artwork is based on fieldwork in the same areas. With its large format, more than 40 full-color plates, and state-of-the-art five-color printing, this limited-edition book promises to become a classic and a collector's item. Despite their long association with human culture, trogons remain poorly known. Much of the existing ecological information comes from studies of a few neotropical species undertaken in the 1930s and 1940s by Alexander Skutch in Costa Rica and Guatemala, and more recent field studies of the Elegant Trogon at the northern extremity of the range. There have been longstanding uncertainties about the relations and origins of trogons. Kingfishers and their allies have often been nominated as the trogons' closest allies and a New World origin was assumed because most trogon species are now found in the neotropics. However, recent studies have supported placing trogons in a separate order--Trogoniformes--with possible affinities to the African mousebirds, and there is some evidence for an Old World origin. At a time when researchers and fieldworkers are showing increasing interest in the trogons, and when tropical forests, the home of most trogon species, are threatened by logging and land clearing, this book is intended to not only summarize and advance knowledge about trogons but also to draw attention to the urgent need to protect these magnificent birds by safeguarding the habitats so critical to their continued survival. Trogons is an essential volume for libraries, birders, conservationists, ornithologists, eco-tourists, and collectors of fine bird books. Text by renowned ornithologist Joseph Forshaw provides the most authoritative and comprehensive account of the trogons ever written Paintings by eminent bird artist Albert Gilbert accurately depict for the first time all trogon species in their natural habitats and true colors More than 80 color and black-and-white illustrations, including a foldout color plate of the Resplendent Quetzal, the sacred bird of the ancient Mayans and Aztecs Large format and state-of-the-art five-color printing Edition limited to 700 copies in the United States and 1,400 copies worldwide An essential volume for libraries, birders, conservationists, ornithologists, eco-tourists, and collectors of fine bird books
Birding in Venezuela
Birding in Venezuela - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Birding in Venezuela write by Mary Lou Goodwin. This book was released on 2003. Birding in Venezuela available in PDF, EPUB and Kindle. A completely revised and up-dated edition of the acclaimed Audubon Guide. Includes all you need to know about visiting the main Venezuelan locations for observing birds, including how to get to the sites, lodging, list of species in the area and maps.
The Ascent of Birds
The Ascent of Birds - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Ascent of Birds write by John Reilly. This book was released on 2018-04-16. The Ascent of Birds available in PDF, EPUB and Kindle. When and where did the ancestors of modern birds evolve? What enabled them to survive the meteoric impact that wiped out the dinosaurs? How did these early birds spread across the globe and give rise to the 10,600-plus species we recognise today ― from the largest ratites to the smallest hummingbirds? Based on the latest scientific discoveries and enriched by personal observations, The Ascent of Birds sets out to answer these fundamental questions. The Ascent of Birds is divided into self-contained chapters, or stories, that collectively encompass the evolution of modern birds from their origins in Gondwana, over 100 million years ago, to the present day. The stories are arranged in chronological order, from tinamous to tanagers, and describe the many dispersal and speciation events that underpin the world's 10,600-plus species. Although each chapter is spearheaded by a named bird and focuses on a specific evolutionary mechanism, the narrative will often explore the relevance of such events and processes to evolution in general. The book starts with The Tinamou’s Story, which explains the presence of flightless birds in South America, Africa, and Australasia, and dispels the cherished role of continental drift as an explanation for their biogeography. It also introduces the concept of neoteny, an evolutionary trick that enabled dinosaurs to become birds and humans to conquer the planet. The Vegavis's Story explores the evidence for a Cretaceous origin of modern birds and why they were able to survive the asteroid collision that saw the demise not only of dinosaurs but of up to three-quarters of all species. The Duck's Story switches to sex: why have so few species retained the ancestral copulatory organ? Or, put another way, why do most birds exhibit the paradoxical phenomenon of penis loss, despite all species requiring internal fertilisation? The Hoatzin's Story reveals unexpected oceanic rafting from Africa to South America: a stranger-than-fiction means of dispersal that is now thought to account for the presence of other South American vertebrates, including geckos and monkeys. The latest theories underpinning speciation are also explored. The Manakin’s Story, for example, reveals how South America’s extraordinarily rich avifauna has been shaped by past geological, oceanographic and climatic changes, while The Storm-Petrel’s Story examines how species can evolve from an ancestral population despite inhabiting the same geographical area. The thorny issue of what constitutes a species is discussed in The Albatross's Story, while The Penguin’s Story explores the effects of environment on phenotype ― in the case of the Emperor penguin, the harshest on the planet. Recent genomic advances have given scientists novel approaches to explore the distant past and have revealed many unexpected journeys, including the unique overland dispersal of an early suboscine from Asia to South America (The Sapayoa’s Story) and the blackbird's ancestral sweepstake dispersals across the Atlantic (The Thrush’s Story). Additional vignettes update more familiar concepts that encourage speciation: sexual selection (The Bird-of-Paradise's Story); extended phenotypes (The Bowerbird's Story); hybridisation (The Sparrow's Story); and 'great speciators' (The White-eye's Story). Finally, the book explores the raft of recent publications that help explain the evolution of cognitive skills (The Crow's Story); plumage colouration (The Starling's Story); and birdsong (The Finch's Story)
