Tree Sparrow Passer montanus

Smaller than a house sparrow and more active, with its tail often cocked. It has a chestnut brown head and nape (rather than grey) and white cheeks and collar with a contrasting black cheek spot. They are shyer than house sparrows and are rarely associated with people in the UK. Image: Natural England/P.N. Watts (Flickr).

Find out more: RSPB, Suffolk Wildlife Trust, iNaturalist