Pine marten reintroduction, survey and monitoring in Gwynedd


The Pine Marten. Karen Bullock


Penrhos red squirrel. Image by kind permission Alan Jones photography

A History of Success in North Wales

In 1998, there were only 40 red squirrels remaining on the island of Anglesey. Today, thanks to the successful eradication of grey squirrels there are around 800 red squirrels and the population has expanded across the Menai Straits into northern Gwynedd. Bangor is the only City in Wales where this rare native woodland species present. 


Pine Martens & Red Squirrels

In March 2018 we found evidence of pine marten in Arfon District, Gwynedd. Our volunteers have  been monitoring this population using wildlife cameras across the project area including in woodland in the Ogwen valley. A Bangor University MSc student investigated the response of local red squirrels to the presence of this arboreal predator and found that red squirrels actually increased activity at feeders assocaited with pine marten activity.


PIne Marten Nest Boxes

We have established a growing network of pine marten nest boxes which allow us to collect data on distribution and, by analysing scat, the diet of this small predator. Working with the Welsh Mountain Zoo, Wildwood Trust, New Forest Wildlife Park and the University of Newcastle we now have a project to release more animals into the landscape. Working with APHA labs we have helped develop new non-invasive techniques to assess viral infections amongst captive and wild pine martens.


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Pine marten in Arfon district June 2018

First video recording of a foraging pine marten in Arfon district, northern Gwynedd.