Common in woodland, especially of birch, heathland and gardens throughout Britain. Widespread and common in Hampshire and on the Isle of Wight. Wingspan male 36-40 mm, female 40-43 mm. In Scotland moths are distinctly straw-coloured with outer markings darker (ssp. scotica
), elsewhere, occasional individuals can be very pale (f. pallida
), but only likely to be confused with Dusky Hook-tip D. curvatula
, a rare immigrant from Europe, which is darker and has the three discal spots roughly the same size (in falcataria
, the outer discal spot is much larger then the other two). Larva feeds on Downy and Silver Birch, over-wintering as a pupa.