Scores of house martins perched on wires and twittering about above the Carr track, many of them this year’s fledglings.
Several landed on the dustier sections of the track to gather grit for their gizzards.

Scores of house martins perched on wires and twittering about above the Carr track, many of them this year’s fledglings.
Several landed on the dustier sections of the track to gather grit for their gizzards.