Black woodpecker sitting on branch of a beech tree

woodpecker piciformes branch beech bark deciduous nest picidae canopy tree bird wood fagus sylvatica woody nature dryocopus martius adult insect dryocopus park coiffure picinae hole forest veluwe foliage national park deadwood signal silhouette netherlands knock sit communication summer hammer chisel green mohawk copy space europe empty space hairdo headdress redheaded haircut black redhead grey