In my front garden,Barnstalpe Very rare in Devon
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it does seem to have a white neck, but otherwise looks like a male house sparrow, with a female house sparrow.
I also reckon they are House Sparrows, male on right (the grey cap is just visible) and female on left (supercilium visible). The white fleck behind the male's eye is also just visible. Tree Sparrow sexes are similar and have chocolate brown caps. They also have a neater appearance.
I was just checking to make sure as they are rare in Devon, House Sparrow it is then
Lat/Lng: 51.0, -4.1
OS grid ref: SS5632