Scientists hope to learn what makes certain red squirrels able to survive squirrelpox.
Where pine martens have recovered, red squirrels have tended to benefit while grey squirrels have declined. Scientists weren't sure why – until now.
If harm to native wildlife is the main concern then there are much bigger targets for control than grey squirrels.
We should welcome a native predators' return across the British Isles, while at the same time being honest about the implications.
Formby is one of the only remaining urban areas in England where red squirrels can be found at all.
Grey squirrels are wreaking havoc on UK woodlands.
Grey squirrels have lots of attractive characteristics, yet they are actively persecuted by humankind.
Grey squirrels hate these reclusive, cat-sized predators.