Certhia familiaris is the scientific name for the common treecreeper, a small bird found across Europe and Asia. Synonyms for this species include the Eurasian treecreeper, European treecreeper, and brown creeper. These synonyms are used interchangeably to refer to the same species. Despite its name, the treecreeper does not actually creep on trees but climbs upwards in a spiral pattern using its sharp claws and long, curved beak to search for insects. The treecreeper has a distinctive brown and white plumage, a slender, curved bill, and a long, stiff tail used for support. It is known for its cryptic behavior and exquisite camouflage.