January 8, 20224 yr 3 hours ago, scottishjohn said: a suirrel could run up any sort of pebble dash Oh yes, my last house had pebble dash and squirrels used to run all round the house (outside) on the pebbledash.
January 8, 20224 yr We are talking red squirrels here, and also pine martens. From what I have read the swallows are not programmed to see a box on a tree as an option anyway. Perhaps a big, insulated box constructed on the outside of an outbuilding would do.
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