This 1 April 2020 video from Dorset in England says about itself:
Protecting squirrels’ nuts at National Trust Brownsea Island
Rangers on Brownsea Island have spotted the resident red squirrels are struggling to find their nuts.
Throughout autumn, red squirrels store food in tidy piles around the island, however, the forgetful rodents soon lose track of where they’ve stashed their snacks. This winter, we followed our team of dedicated rangers as they stepped in, setting a trail of squirrel-sized markers to lead the squirrels back to their lunch.