Sir – A reader was asking about the rooks and gulls he regularly saw fly over his home in Didcot (Letters, November 5).

In the past we have wondered about the gulls and so decided to follow them. It took us two tries, but eventually it took us to Farmoor reservoir. It is worth a visit.

You stand there, in an evening, and the gulls seem to be coming from all directions.

Apparently Farmoor is well known in the bird world for its gull roost. I presume the rooks are doing a similar thing — although we haven’t tried chasing them.

Linda Tillotson, Wantage