Several platforms offer high-quality audio recordings for listening or free MP3 download: Eurasian Nuthatch (Sitta europaea) :: xeno-canto
Обыкновенный поползень (Sitta europaea) zvuki ptits popolzen skachat
Sharp, metallic "tsit" sounds or trilling "sirrr" when agitated. zvuki ptits popolzen skachat
A short, sharp "twit" or "cit" often repeated in quick series of 2–4 notes. zvuki ptits popolzen skachat