Australian magpie plays with a canine friend

I loved this clip that a friend sent me, of a dog and a magpie playing together It reminded me of some photos I took years ago of magpies in a local park. It sure looked to me like they were playing, or perhaps the parents were 'disciplining' the baby.

I assumed the grey-backed birds were younglings, and the white-backed ones were adults (though I'm not sure about that). It's interesting that it was not always the baby who was upside-down. Looking around the internet for information about whether Australian magpies do indeed play, I came across this hilarious site. Here's a photo of two youngsters playing while an adult keeps watch.