Michael Shrubb - Böcker

This attractively illustrated book reviews the effects of agricultural development on bird populations in Britain. Examining modern farmland as a bird habitat, it explains the changes, both in habitat structure and in available resources, that have occurred as a result of mechanisation and use of agrochemicals. Farmland bird communities are described, and their composition related to farm structure and land use. Based extensively on empirical data extracted from the British Trust for Ornithology's Common Bird Census and from nest histories recorded in the BTO'S Nest Record Scheme, the book presents an important analysis of the position of agricultural bird populations under modern farming systems. Particular examination has been made of the impact of changing methods, rotations and crops, which have been underestimated in the past. Resulting from the co-operation between a professional ornithologist and a working cereal farmer, this book provides an objective and informed view of the impact of British agriculture on bird populations.

First published in 2003, Birds, Scythes and Combines provides an historical perspective to changes in farmland bird populations in Britain over the past 250 years. Despite the scale of change in habitats and agricultural methods in the late eighteenth and nineteenth centuries, early avifaunas show that farmland birds were little affected. Specialised species of fen and marsh were lost, often as much to persecution as habitat destruction, but farmland birds benefited from the appearance of extensive new resources which aided their adaptation to the altered habitats created by the new farming methods. In addition, many old permanent grass habitats were little altered, leaving a major reservoir of important habitats unchanged. By contrast, more modern farming methods, with changes in grassland management, in herbicide use and in harvesting methods particularly, have led to a collapse in the diversity of farmland and a consequent steep decline in the population size of a high proportion of farmland birds.

First published in 2003, Birds, Scythes and Combines provides an historical perspective to changes in farmland bird populations in Britain over the past 250 years. Despite the scale of change in habitats and agricultural methods in the late eighteenth and nineteenth centuries, early avifaunas show that farmland birds were little affected. Specialised species of fen and marsh were lost, often as much to persecution as habitat destruction, but farmland birds benefited from the appearance of extensive new resources which aided their adaptation to the altered habitats created by the new farming methods. In addition, many old permanent grass habitats were little altered, leaving a major reservoir of important habitats unchanged. By contrast, more modern farming methods, with changes in grassland management, in herbicide use and in harvesting methods particularly, have led to a collapse in the diversity of farmland and a consequent steep decline in the population size of a high proportion of farmland birds.