It was feeding on the Fuschia leaf, the main food plant for this species is Fuschia and Honeysuckle.
I managed to get a few shots.
A BINS message at lunchtime about a Red- backed Shrike on Carlton Marshes saw me down there at 6.30pm in the evening and just past the first field on the left from the car park, we looked out west over the meadow towards 3 bramble bushes. Danny P, Justin L, and Chris M were amongst the birders looking over the area. It hadn't been seen since 4.40pm, we were joined by Clive N & Dick W. After an hour Dick & I decided to check the area out from the western side (the sunny side). We had no luck but we had good views of a Barn Owl patrolling the area. Clive then rang to say he had the Shrike and as we walked briskly back, 4 Jay flew away along the path. Reaching the spot by the gate we walked west along the edge of a field and looking back along the bushes, Dick did well to pick out the excellent male Red- backed Shrike, a fine summer- plumaged adult male with grey head, black mask and reddish- brown mantle perched slightly within the bush. We enjoyed the views for a few minutes before leaving the bird go into roost within the scrub.