Grauammer

Emberiza calandra, Corn bunting

Madge, S. & de Juana, E. (2019). Corn Bunting (Emberiza calandra). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/61861 on 25 February 2019).
Kartenvorlage: Karte: NordNordWest, Lizenz: Creative Commons by-sa-3.0 de