Ключевые слова: adaptive, bark, biodiversity, brown plumage, camouflage, certhia familiaris, climbing, curved beak, delicate, ecology, eurasian treecreeper, feathered, foraging, forest, hidden, insect hunter, natural environment, nature, observation, perched, serenity, sharp claws, small bird, songbird, survival, tiny, tranquility, tree, white underside, wildlife, woodland,