No interactions present.
I have never seen them impaling there food source on barbed wire before.
I can't recall seeing any Shrikes around the area but it doesn't mean they weren't there!:)
Called the Red-Backed Shrike the "Butcher Bird" for this very reason: I never saw either the bird nor any such evidence! The birds were already in decline, I think; certainly SE Derbyshire wasn't a stronghold by the 1950s.
Lat/Lng: 50.811, -2.032
OS grid ref: ST978012