Quellen und Links
- Summers-Smith, D. (2019). Spanish Sparrow (Passer hispaniolensis). 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/60927 on 25 February 2019).
- Kartenvorlage: Karte: NordNordWest, Lizenz: Creative Commons by-sa-3.0 de