There are three so-called birds, the vocalist Patricija Škof, saxophonist Tibor Pernarčič and guitarist Tilen Beigot, all coming from Slovenia. birds of unknown were formed in the beginning
of 2020. The trio gave a debut performance on May 2020 at the radio show called Prva Vrsta, which is a part of the program of the Slovenian National Radio (RTV Slovenia). Their first single, which they released in June 2020, was part of the EP compilation called Stereoisolation, which was a project of the festival Jazz ma’ mlade during the pandemic.
They performed at the numerous festivals such as Jazz Festival Ljubljana, MENT, KickJazz Festival (Porgy&Bess Vienna), JazzWerkstatt Graz, Jazzinty, Jazz ma’ mlade, Zvončki in
trobentice (Cankarjev dom), Imago etc. In October 2022 they also performed as a supporting act of Alfa Mist in Palac Akropolis, Prague. They were one of the 6 finalists of Klubski Maraton 2021 (touring program in Slovenia) of Radio Študent.