Oh no it isn't! Oh yes it is!

Little brown job with chunky beak scavenging for crumbs in the car park, What do you expect it to be? A house sparrow?
OH NO IT ISN'T.

Chestnut head - Check.
White cheek - Check
Black patch in middle of white - Check
Can it be . . . ?
OH YES IT IS.

A Tree Sparrow! - Passer montanus