Araujo, Neves & Rufino(1994)Monteiro (1995,1999,2000)Berliner(1996,2001)S:N:P:R:C:N.(1992)
Further resources
Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Upper River Douro and Águeda valleys. Downloaded from
http://www.birdlife.org on 15/01/2021.