vrabec polní Passer montanus

This common Eurasian species is a close relative of the House Sparrow. Slightly smaller than House Sparrow with entirely rufous cap, black and white cheek, and limited black in the throat. Males and females are similar. Typically found in noisy small flocks, often in more natural areas than concrete-loving House Sparrow; calls are often higher-pitched than those of House Sparrow, and has a slightly slower chatter. Feeds on seeds. Introduced to a small region in the central U.S. and southeast Australia.