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Despite the scale of change in agricultural methods in the late eighteenth and nineteenth centuries, farmland birds were little affected, with many benefiting from the appearance of extensive new resources. This book is an historical account of the impact of changes in farming methods on the bird populations of British farmland over the past 250 years. A comparison with modern experience shows significant differences, with the more recent changes in grassland management, herbicide use and harvesting methods leading to a loss of diversity in farmland and, consequently, resulting in steep declines in bird numbers.
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.
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.
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