In the driving tweet

■ Re the recent letter about ‘squatter’ sparrows on a caravan holiday. While in our caravan in Lincolnshire, a blackbird had three attempts at building a nest in the front grille of our car. I felt really bad having to remove all the nesting material and we had to fix a sheet over the front while we were parked. The site had masses of trees so I don’t know what the appeal of our car was! Ann Carrier,

Market Harborough