Bowtruckles are tiny, pixie-like creatures made of wood. Bowtruckles have knobbly brown arms and legs, two twig-like fingers at the end of each hand, and flat, bark-like faces. Bowtruckles are tree-guardians and usually live in trees whose wood is of wand quality. They eat woodlice and fairy eggs.
Professor Grubbly-Plank gathers Bowtruckles for the fifth-year students to study in their Care of Magical Creatures lesson. She mentions that, if angered, Bowtruckles will try to gouge at human eyes with their sharp fingers. It is wise to have a gift of woodlice ready to distract Bowtruckles when you need leaves or wood from any tree they reside in.