Martín, B., Onrubia, A., de la Cruz, A., Ferrer, M. 2016. Trends of autumn counts at Iberian migration bottlenecks as a tool for monitoring continental populations of soaring birds in Europe. Biodiversity and Conservation. DOI: 10.1007/s10531-016-1047-4
Key words: bottleneck, global change, organbidexka, raptors, storks, strait of Gibraltar
Year: 2016