Chicago Zoological Society, US

One threat to parrot arises from their attractiveness as "talking" companions to humans, leading to a high demand for trade that involves hundreds of thousands of birds annually on a global basis, and gives parrots a high monetary value. There is an urgent need to change the attitudes of both the many millions who keep parrots, and those who make billions of dollars in trading them.

The family Cracidae is made up of 50 species of guans, curassows and chachalacas - large gregarious game birds, many of which have striking colours. They are important as seed dispersers, biological indicators of the environment, a major protein source for indigenous people, and for ecotourism. Nearly half the species in the family are threatened and several have been pushed to near extinction by wide-spread destruction of tropical forets and over-harvesting.

The African elephant is the largest living land mammal. It once inhabited most of the continent, from the Mediterranean coast down to its south tip. This picture of elephant range today is one of scattered, fragmented populations south of the Sahara Desert. Estimates suggested that elephant populations had more than halved in several areas between 1981-87.

The black and the white rhinoceros have become flagship species for international conservation. They are significant not only for the continuation of a major evolutionary heritage, but also as symbols for the protection of African savannahs. The battle for the survival of these species has been marked by some notable successes and sadly, many failures, and the situation is still critical.

Although most antelope species still exist in large numbers in sub-Saharan Africa (some in hundreds of thousands), up to three-quarters of the species are in decline. Threats to their survival arise from the rapid growth of human and livestock populations, with consequent degradation and destruction of natural habitats, and excessive offtake by meat hunters.

Conifers are one of the world's most important resources of timber. If managed wisely and used sustainably, these resources will provide wood for a multitude of purposes, virtually indefinitely. Additional products include resins and their derivatives, and even medicinal extracts, for example taxol now used in the treatment of cancer. Conifers occur on all continents except Antarctica.

These 12th proceedings provide an overview of the ongoing research and management activities on polar bears on the circumpolar Arctic. Together with the previous proceedings, they provide an historic record of the international effort in protecting polar bears from over-harvest, and document more recent concerns of threats arising as a consequence of increased human activities in both the Arctic and in regions far beyond the realm of polar bears.

The eight species of bear live in more than 65 countries or autonomous regions in four continents, in a variety of habitats from tropical rainforests to arctic ice. Numerous human cultures around the world symbolically or physically try to incorporate the power of bears into their people.

Deer are a unique group of mammals recognised for their grace and beauty. Some are also prime examples of flagship species, whose continued survival sustains the complex interplay of flora and fauna. Today many species are under threat of extinction.

The first comprehensive treatment of North American rodents of conservation concern. This action plan summarises the rodent fauna of North America and provides available information on every rodent taxon that has been considered to be of conservation concern by state, provincial and private conservation agencies and regional experts.