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Photo: blondinrikard · CC BY 2.0 (May be cropped or resized)
Passer montanus
Diet
Mainly seeds; also invertebrates
Habitat
Towns and cities in eastern Asia; lightly wooded open country in Europe
Range
Temperate Eurasia and Southeast Asia; introduced elsewhere
Clutch size
Typically 5–6 eggs
The Eurasian tree sparrow is a sparrow with a rich chestnut crown and nape and a black patch on each pure white cheek. The sexes look alike and young birds are duller. It breeds across much of temperate Eurasia and Southeast Asia and has been introduced elsewhere, including the United States, and its appearance varies little across its range (Wikipedia, general species account).
The untidy nest is built in a natural cavity or a hole in a building, with a typical clutch of five or six eggs that hatch in under two weeks. It feeds mainly on seeds but also takes invertebrates, particularly in the breeding season, and the typical lifespan is about two years. It is widespread in the towns and cities of eastern Asia (Wikipedia, general species account).