Eat, roam, repeat: Can the bison’s big appetite stop Spain’s forest fires? | Environment | The Guardian

Morán says forest engineers were impressed by the first project that began in 2010, when seven bison were released into 20 hectares of oak forest. Bison were doing the forestry work, clearing the undergrowth, even leaving straight saplings to grow while eating the bent ones, perhaps because the latter are easier to reach. Forest clearance of this type costs approximately €3,000 (£2,602) a hectare – and the bison were doing it for free. Source: Eat, roam, repeat: Can the bison’s big appetite stop Spain’s forest fires? | Environment | The Guardian