Singing birds

(Aegithalos caudatus)

(Acrocephalus scirpaceus)

(Serinus serinus)

(Acrocephalus scirpaceus)

(Erpetoichthys calabaricus)

(Regulus regulus)

(Sitta europaea)

(Aegithalos caudatus)

(Regulus regulus)

(Regulus regulus)

(Sylvia atricapilla)

(Troglodytes troglodytes)

(Aegithalos caudatus)

(Aegithalos caudatus)

(Aegithalos caudatus)

(Aegithalos caudatus)

(Aegithalos caudatus)

(Acrocephalus schoenobaenus)