Mehlschwalbe

Delichon urbicum, Northern House-Martin

Turner, A. & Kirwan, G.M. (2019). Northern House Martin (Delichon urbicum). 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/57746 on 21 February 2019).
Kartenvorlage: Karte: NordNordWest, Lizenz: Creative Commons by-sa-3.0 de