Bird species

Xem 1-20 trên 36 kết quả Bird species
  • The diversity of bird species is of special importance as it can create responsive and adaptive behaviours among the whole animal population in wild environment. For this reason, the frequent making of inventory lists of bird species helps assess and evaluate the current status of forest resources in natural conservation areas which are inherently under human pressures in our country. During the two years (2009 - 2010) of the study conducted in Huu Lien Nature Reserve in Lang Son province, records have been made of 168 bird species belonging to 117 genus, 54 families, 17 orders.

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  • Many species undertake long distance annual migrations, and many more perform shorter irregular movements. Birds are social; they communicate using visual signals and through calls and songs, and participate in social behaviours, including cooperative breeding and hunting, flocking, and mobbing of predators. The vast majority of bird species are socially monogamous, usually for one breeding season at a time, sometimes for years, but rarely for life. Other species have polygynous ("many females") or, rarely, polyandrous ("many males") breeding systems.

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  • Tham khảo luận văn - đề án 'báo cáo nghiên cứu khoa học: "composition of bird species in huu lien nature reserve, lang son province"', luận văn - báo cáo phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Bird Species Recognition Using Support Vector Machines

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  • Bird characteristics: Body always covered with feathers; feet (toes and usually tarsometatarsus) covered with scales (thickened skin). Aquatic birds have webbed toes. No teeth; horny beak. Lightweight skeleton in flying birds (many hollow bones), with keel on sternum for attachment of flight muscles (pectoral muscles). No keel in large flightless birds (ostrich, emu, rhea). Completely bony ribs (no rib cartilage). Clavicles fused into single bone, the furculum (wishbone). Numerous neck vertebrae (number varies by species) provide great neck flexibility.

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  • This short book is about conserving insects, the most diverse and abundant animals that share our world. In particular, it is about the common focus of conserving individual species of insects. This so-called ‘fine filter’ (or ‘fine grain’) level of conservation parallels much conservation effort for better-understood groups of animals such as mammals and birds, for which species-focused conservation exercises are commonplace.

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  • Bird watching ecotourism is highly-responsible and educative kind of nature tourism which helps conserve natural environment and culture values of the local area, develop community and bring about remarkable economic benefits. Birds are seen everywhere but especially found with many species in nature reserves and national parks. There are 30 National Parks, 67 Nature Reserves, more than 50 Bird Sanctuaries in Vietnam, and more 16 Marine Protected Area are planned to be established until 2015, which has great potentials to develop bird watching ecotourism.

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  • Beginning birdwatchers face many frustrations: birds, it seems, are constantly in motion, taking flight before the fledgling birder can turn to a photograph or drawing that might help pinpoint its identification. The experienced birdwatcher, Edward Cronin writes in this friendly manual, is by contrast able to identify a dozen species in a few seconds, which compounds the beginner's lack of self-confidence. Never fear, Cronin reassures us: The "magician's trick of rapidly identifying species is, in truth, based on a logical procedure that anyone can master.

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  • Birds, by their very existence, enhance our daily lives. For many of us, it is a thrill to see the splash of a Brown Thrasher in a birdbath, or the flash of red in green woods as a tanager darts past. It is a gift of nature that such birds – which play an important role in healthy ecosystems by controlling pests, dispersing seeds, and pollinating plants – are also so beautiful and such a joy to watch.

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  • A scientist might call it an oviparous vertebrate. It could be a lifer for a twitcher, or a control for a ringer. It might be drumming or jugging, ina trip or a wisp. You could split it, dip out on it, or even cause it to explode. It is, of course, a bird. Birdwatchers' language is a mixture of science and slang. You might well hear nictitating membrane and marsh cowboymentioned in almost the same breath. If you read about or talk about birds you are bound to meet expressions like these, but discovering their precise meanings can be remarkably difficult.

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  • Sự đa dạng của các loài chim đặc biệt quan trọng vì nó có thể tạo ra các hành vi đáp ứng và thích nghi giữa các dân số động vật toàn bộ trong môi trường hoang dã. Vì lý do này, việc xây dựng danh mục hàng tồn kho của các loài chim thường xuyên sẽ giúp đánh giá và đánh giá hiện trạng tài nguyên rừng trong khu bảo tồn tự nhiên vốn dưới áp lực của con người ở nước ta.

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  • In the search for a new framework, we have come to believe strongly in emerging management principles based on the “new science” of complexity that exploit an understanding of autonomous human behavior gained from the study of living systems in nature. Specifically, we have begun to build the notion of complex adaptive systems (CAS) into our management assumptions and practices. Complexity scientists have studied the collective behavior of living systems in nature such as the flocking of birds, schooling of fish, marching of ants and the swarming of bees.

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  • Despite occupying only three percent of the earth’s surface, the ASEAN region hosts 20 percent of all known species that live deep in the region’s mountains, jungles, rivers, lakes and seas. The region includes three mega-diverse states (Indonesia, Malaysia, and the Philippines); several bio-geographical units (e.g., Malesia, Wallacea, Sundaland, Indo-Burma and the Central Indo-Pacific); and numerous centers of concentration of restricted-range bird, plant and insect species.

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  • The Weidmoos was originally an extensive raised bog. For many decades, peat was extracted here on an industrial level.When the last peat was cut in 2000, Nature started to dominate the area once more.What came to be created was a mosaic of ponds, reeds and willow bushes, providing many rare species of bird with an ideal habitat. The Weidmoos gradually became a bird habitat of European significance. Over 150 species of bird have been identified so far, of which some are endangered on a European level.

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  • Novel biotin-binding proteins, referred to herein as tamavidin 1 and tamavidin 2, were found in a basidiomycete fungus, Pleurotus cornucopiae, known as the Tamogitake mushroom. These are the first avidin-like proteins to be discovered in organisms other than birds and bacteria.

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  • In order to permanently preserve the quality of habitat for bird species resident to the Weidmoos, it was essential to alter the post-extraction state of the site, so that an open landscape with numerous bodies of water and moist areas would remain. The most important measure to ensure the long-term conservation of the Weidmoos as an open landscape – and therefore as a valuable bird habitat – is the so-called “re-waterlogging” of the site.

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  • The Weidmoos also gained in significance for many other bird species, thanks to the LIFE project. For example, many types of duck now breed at the Weidmoos. Species such as the Little Grebe and the Water Rail are now typical of the Weidmoos. Even rare reed-dwellers, such as the Great Reed Warbler found a new habitat at the Weidmoos. The essential basis of this success story is the close collaboration and trust shown by the Nature Protection Department, the Association Torferneuerungsverein, the local councils, landowners, farmers and hunters.

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  • Swans are among the most beautiful of North American waterfowl and have always enjoyed the admiration and even the protection of bird lovers. Of the six species in the swan genus, only two are native to North America. The trumpeter swan, the largest

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  • See what's new in the Second Edition: · Number of species included is increased from 6300 to over 8700, about 85% of the world's birds · Better data for many of the species included in the first edition - an exhaustive compilation of new data published from 1992 through 2007 · More comprehensive coverage of Latin America, Japan, Taiwan, Southeast Asia, and more coverage of research published in non-English language journals In 1992 the CRC Handbook of Avian Body Massesbroke new ground by providing a compilation of body masses for 6300 species, about two-thirds of the world's species.

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  • INTERNATIONAL VARIETIES OF ENGLISH may be specific to one geographical area. For example, ash and mahogany are both used in Australia to apply to many eucalypts; badger was used in Australia to refer to marsupials, especially the wombat, and mole was sometimes used in the nineteenth century to refer to the platypus; robin is used to refer to a number of different species of bird in North America, Australia and New Zealand; a barber may be a sheep-shearer in Australia; in South Africa a block is a number of farms in a single unit owned by one person or company...

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