Hidalgo, S. 2005. Sexing, ageing and moult of Common Buzzards Buteo buteo in a southern Europe area
2005. Zuberogoitia, I., Martínez, J.A., Zabala, J., Martínez, J.E., Castillo, I., Hidalgo, S. 2005. Sexing, ageing and moult of Common Buzzards Buteo buteo in a southern Europe area. Ring. & Migr., 22: 153-158