The woods, and woodland edges, provide an excellent habitat for butterflies particularly speckled woods, like the one above.
The UK Butterfly Monitoring Scheme depends on volunteers to track the butterfly population. Idverde worked with the scheme to set up a transect - a set walking path - around Crofton and Sparrow Woods. In 2020 the Friends of Crofton and Sparrow Woods volunteered to walk the transect weekly to record the butterflies seen. More volunteers are needed to undertake this task - between March and September each year.
In 2020 the transect was walked regularly from mid summer, and 16 species were identified:
This does not include early season species like orange tip, which were also seen in 2020. 2021 will provide full-year data.