The BBC reports an artificial intelligence (AI) tool which has been trained to tell the difference between grey and red squirrels could be “an absolute game changer”, conservationists say.

The system, called Squirrel Agent, has been trained on thousands of images of the animals allowing it to tell them apart with 97% accuracy, its developer says.

It can then be used to automatically control access to squirrel feeders – with only reds being allowed into those containing food, and only greys into those where food has been replaced with contraceptive paste.