Ortolan (Emberiza hortulana), the Green-headed Bunting, native in Europe and in western Asia, migrating southward in autumn, though its winter quarters are not accurately made out, and returning about the end of April or the beginning of May, and then ranging as far north as the Arctic Circle. The length is a little over six inches, and the plumage greenish-grey. In habits and general appearance the ortolan resembles the yellowhammer, but has less brilliant plumage. These birds feed on insects, especially beetles, and seeds. They are highly esteemed for the table, and in their northward and southward flights large numbers.are netted and fattened in dark rooms for the market..