how could its voice be described?
The call is  is a trisyllabic "ti-ti-ti". The male's song, given from the top of a bush or tree, is a loud, high "chirichiriri",
Siberian accentor
The call of the Siberian accentor is a trisyllabic "ti-ti-ti". The male's song, given from the top of a bush or tree, is a loud, high "chirichiriri", variously described as similar to that of the Japanese accentor, the dunnock or the black-throated accentor.
what is the siberian accentor? A small passerine bird.
wiki:10940831
Siberian accentor [SEP] Voice
The call of the Siberian accentor is a trisyllabic "ti-ti-ti". The male's song, given from the top of a bush or tree, is a loud, high "chirichiriri", variously described as similar to that of the Japanese accentor, the dunnock or the black-throated accentor. Breeding birds sing most vigorously early in the season, particularly at dawn, and some individuals may also sing on migration.