Vaskuti, Éva, Zsebők, S. and Garamszegi, L. 2022. Tutoring new song elements to male birds in the wild: Lessons learnt from playback tests with the collared flycatcher. Ornis Fennica. 99, 2–3 (Aug. 2022), 00–00. DOI:https://doi.org/10.51812/of.120666.