03/06/2026
Paired camera trap images of red squirrels and pine martens visiting the same feeders are common in the Scottish Highlands, but we now also have increasing evidence of coexistence across our project area in Cumbria. These photos are from the red stronghold of Thirlmere where, after a long absence of martens, these two native species are thriving once again as part of a healthy woodland ecosystem. It is too early to predict what impacts pine martens might have on non-native grey squirrels and we will continue to monitor squirrel/marten interactions, but we are encouraged by the results of our dietary analysis of pine marten scats from the project area which consistently include the remains of grey squirrels.
Thanks to RSNE for sharing these camera trap images.
University of Cumbria
Restoring Hardknott Forest
Grizedale Forest - Forestry England