Mouser darted to the back of the garden. I couldn't quite see what it was after, some bushes obscured the view. But then the hunted party climbed up a tree. Velvet claws failed to follow. Think it's a question of weight ratio vs. twig bendability. Kitty kept miaowing at the base of the hazel. I went down to have a look. It was a Sciurus vulgaris. It's the first I've seen of them this spring.
Poor thing scared out of its wits. I took a snap and went back indoors. Cat was lurking about, but lost interest. Squirrel didn't come down for another two hours. If it had had pants they would have been soiled.
I'll try and get a better picture some time soon.