The Eurasian Nuthatch ( Sitta europaea ), known as "popolzen" (поползень) in Russian, is a vocal bird with a diverse repertoire of loud, ringing calls.
Several platforms offer high-quality audio recordings for listening or free MP3 download: Eurasian Nuthatch (Sitta europaea) :: xeno-canto
Sharp, metallic "tsit" sounds or trilling "sirrr" when agitated.
Sometimes produces "meowing" calls ("miu-miu") or thin, high-pitched whistles similar to titmice. Where to Listen and Download
Обыкновенный поползень (Sitta europaea)