Blue Illustration of the The rustic bunting ,Emberiza rustica, sitting on a leafy branch. The bird breeds across northern Europe and Asia. It is migratory, wintering in south-east Asia, Japan, and eastern China. It is a rare wanderer to western Europe. It breeds in wet woodlands. Four to six eggs are laid in a nest in a bush or on the ground. Its natural food consists of seeds, and when feeding young, insects.