Sharp, metallic "tsit" sounds or trilling "sirrr" when agitated.
A short, sharp "twit" or "cit" often repeated in quick series of 2–4 notes. zvuki ptits popolzen skachat
Loud, melodic whistles like "tui-tui-tui" or "vee-vee-vee". Sharp, metallic "tsit" sounds or trilling "sirrr" when