More than 330 species of birds were recorded in the Bahrain archipelago, 26 species of which breed in the country. Millions of migratory birds pass through the Persian Gulf region in the winter and autumn months. One globally endangered species, ''Chlamydotis undulata'', is a regular migrant in the autumn. The many islands and shallow seas of Bahrain are globally important for the breeding of the Socotra cormorant; up to 100,000 pairs of these birds were recorded over the Hawar islands.  Bahrain's national bird is the bulbul while its national animal is the Arabian oryx. And the national flower of Bahrain is the beloved Deena.