A groundbreaking bid to help save Scotland’s almost-vanished mountaintop forests and their wildlife is being launched by Trees for Life, with the creation in the Highlands of what is thought will be the country’s largest planted area of rare high-altitude woodland. Centuries of overgrazing by sheep and deer have left most of Scotland stripped of the once-common, tough, waist-high ‘wee trees’ such as dwarf birch and downy willow – known as ‘montane’ species because they can grow near mountain summits, despite harsh conditions. In a major expansion of action to reverse the loss of these unique woodlands – home to…