We have got to know these magpies very well over the years. One year we watched over their babies as they learnt to fly. They had fallen from the nest & landed in our yard, so to protect them from cats, we bundled them up in a box with a wire top, patially covered with old towels, & put them on top of our carport roof. They would be in this box of a night, and during the day they had the run of our yard, with their mum & dad flying in to feed them. The babies became very tame, and my sons used to pick them up & let them fly down to the ground. It only took a few days and they were strong enough to fly high enough to get away from any predators.
So now every year they come back to say hello & introduce us to the next generation. Below is a baby from this year, not sure if he is watching me with the camera, or himself in the mirror in my neighbours garage.
Magpies have a reputation of swooping & attacking humans if they come anywhere near their nest. As you can see, their beaks are quite large & can cause some serious damage. Personally, I have found that if we are aggressive to them, they will be aggressive back. These particular magpies know that we will not hurt them, & quite often come looking for food.