Facebook post by University of Helsinki Julkaistu 22.05.2020 klo 14:42 University of Helsinki kirjoitti Facebookissa It is again the time of the nightingales. What do their songs tell us? Male nightingales learn the singing style of their own area as nestlings, possibly even before they hatch. Listening to variation and world history in the song of the nightingale | University of Helsinki helsinki.fi How does the nightingale’s singing change? Jorma Sorjonen’s old recordings have been brought back to life in Abel Souriau’s doctoral thesis.