Spanish sparrow
The western subspecies "hispaniolensis" breeds in parts of Iberia and North Africa, some islands, and the Balkans. In Iberia it is uncommon, occurring in the Tagus valley and sporadically in the northern meseta, the eastern coast, and in the Guadalquivir and Guadiana valleys. While the house sparrow and the Spanish sparrow form a "hybrid swarm" in the eastern half of the Maghreb, they coexist with little hybridisation in the western half. In northern Italy and Corsica, the Spanish sparrow is replaced by the Italian sparrow and the two intergrade in southern Italy, as well as Malta, Crete and nearby islands such as Rhodes. The Spanish sparrow is not known to breed in the Balearic Islands, the Aegean Islands, Corfu or the Peloponnese, but it occurs on Sardinia, Pantelleria and smaller islands near the coast. In the Balkans, it occurs patchily from Montenegro across into the Danube Valley of Romania and northern Serbia. It is found in mainland Greece and Bulgaria, where it is also uncommon.