Garden fiends

This fella came in our garden today. It looks like the same one who came to see me at home last year. I've got nasty memories of that when I went out to see him and all his aunts, uncles, brothers, sisters, cousins, grannies, grandads and especially his mum and dad came and had a go at me so I'm not making the same mistake this year. Why can't they just keep away if they're not prepared to be friendly?