The drumming of greater-spotted woodpeckers, the ‘chiff-chaffing’ of chiffchaffs, and the trilling of wood warblers are all part of woodland’s springtime melody. Noctule bats roost in the holes and crevices of trees and emerge at dusk to feed on flying insects. Peregrines soar along the steep cliffs above the park, so don’t forget to look up! If you spot leafy lichens growing on twigs and tree trunks, then this is a sign of clean air. Below the ancient trees you’ll see a wonderful ground flora consisting of wood sorrel, heather, bilberry, wavy hair-grass, as well as hart's-tongue, broad buckler, and male ferns.