Chestnut-headed sparrow

Chestnut-headed sparrow

Observation - Chestnut-headed sparrow. Description: This sparrow has a brown head - no sign of grey - but no cheek patches or white collar to suggest tree sparrow. Is it just an unusually-marked house sparrow?

This sparrow has a brown head - no sign of grey - but no cheek patches or white collar to suggest tree sparrow. Is it just an unusually-marked house sparrow?