Newton, I. — Bird Populations (New Naturalist 124)

Harper Collins London 496, 200 col photos, col illus. . HB. NEW. . First edition. Explores bird populations and what causes their fluctuation – food supplies, competitors, predators, parasites, pathogens and human activity.Massive changes in land use in recent decades have in brought about huge changes in bird habitats and populations; some species dependent on the old landscapes declined, while others have increased. Over the same period, changing public attitudes to wildlife allowed previously scarce bird species to recover from past onslaughts, while climate warming has promoted further changes.In this seminal new work, the author explains why different bird species are distributed as they are, and why they have changed over the years in the way that they have. The watching and study of birds now provides a source of recreation and pleasure for very large numbers of people, while continued monitoring of bird numbers can also alert us to impending environmental problems.. [9780007429530]