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Article
Goetz Rheinwald, Auteur ; Erich Hauth, Auteur ; Michael Kuhn, AuteurThe observation of an abnormal singing Garden Warbler in the nature reserve Wahner Heide (North Rhine-Westphalia, western Germany) in 1985 was the starting point to search for more such cases. In total, 36 such singers were detected with accumul[...]
Article
Goetz Rheinwald, Auteur ; Poul Hansen, AuteurRheinwald, G. 2) mysteriously singing birds could have a genetic defect, eventually leading to temporary deafness. Finally we report some records from other passerine species showing mysterious songs of the same type like Garden Warbler.
