Osiejuk TS, Ratyńska K, Dale S, Steifetten Øyvind, Cygan JP. Ortolan Buntings Emberiza hortulana mimicking other species and other dialects of own species. Ornis Norv. [Internet]. 2004 Jan. 1 [cited 2024 Apr. 20];27:73-9. Available from: https://boap.uib.no/index.php/ornis/article/view/199