Australian Magpies are a very common sight in the suburbs and the country. Intelligent, dapper and with one of the most beautiful songs on the planet courtesy of their double windpipe giving them the ability to do their own chords, they can become fiercely protective of their nests at this time of year.

https://www.magpiealert.com/ Now, I've not been attacked but I whistle their "here I am" call whenever I see one, so that might help.