I Googled it in the end Rufus, they're very intelligent birds and playful too, looking at what they were doing in the video.
I put food out on a bird table every morning and love to watch the robin, blue-tits and chaffinches, until the "bully boys" come along, either a flock of Starlings or a couple of Magpies and send the little birds scattering, while they polish off all the food.
Btw I was attacked by a Magpie when I visited my friend in Queensland, we'd stopped at the side of the road to buy Avocados and fruit and while going to the house to pay, this bird swooped at my head and nearly knocked me out. I think it might have been a tame one as the owner called it off. OoRoo