Fig. (1) Centers of RRP abundance (>500 individuals) in Europe: Germany (Rhine-Neckar, Wiesbaden-Mainz, Bonn-Düsseldorf), Italy (Palermo, Rome, Bologna, Genoa), the Netherlands (Randstad), Belgium (Brussels, La Louvière), France (Marseille, Paris, Lille), Spain (Seville, Barcelona), Portugal (Lisbon) and the United Kingdom (Greater London, Canterbury). İstanbul (760 birds) not shown. [original map from Wikimedia Commons]