Scientific discussions such as that raised by Janss et al. (2010) in relation to our paper (Carrete et al., 2009) help to clarify issues in the field of wind energy planning, thus relegating non-technical issues that can potentially contaminate the debate. Janss et al. (2010) recognize the value of our work as the first large-scale assessment of wind farms on the population viability of an endangered species. However, these authors argue that (1) wind-farms in Andalusia (SE Spain) have been carefully planned, with wind-farm locations chosen on the basis of previous risk assessment studies (RAS), and (2) the mortality rate of Egyptian vultures used in our paper to develop the PVA analysis is a local phenomenon that cannot be extrapolated to other areas of Spain. We will try to briefly clarify these points, showing that they are based on outdated information suggesting that results and conclusions brought forth in our paper remain valid.