Based on 23 years of data, Tim Sparks, Lorienne Whittle and Judith Garforth present a woodland calendar for the 21st century, focusing on five woodland species such as Bluebell and Speckled Wood, and highlight some of the associated issues with these types of calendars.
Nature’s Calendar, a scheme coordinated by the Woodland Trust, is the home of nearly three million records of UK phenology. The tracking of phenological events has a long history in the UK and has involved many big names in natural history, including Gilbert White, Leonard Jenyns and Richard Fitter.