The Sparrowhawk's pale underparts and darker back and wings are an example of countershading. This colouration counteracts the effect of light coming from above, and helps to make the bird less visible. In fact, countershading is seen in most animals, including the Peregrine Falcon, the Merlin and other "Accipiters". The Sparrowhawk's stripes are typical of markings on birds of prey which live in woodland.