London, UK. 16 August 2016. A small herd of cattle graze the grassland of Poor's Field, part of Ruislip Woods National Nature Reserve, the largest block of ancient woodland in London, covering some 300 hectares (750 acres). Introduced each year for the summer, the cattle are used to manage the vegetation on the common land. Credit: Stephen Chung / Alamy Live News

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Photo credit: © Stephen Chung / Alamy / Afripics
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Keywords: cattle, common, conservation, cows, ecology, field, grassland, graze, grazing, land, london, management, national, natural, nature, poor, reserve, ruislip, summer, weather, woods