My budgie just flew away?

Can you put the cage outside? Not with the door open, of course, but if she's tame, she should fly back to it. I have caught birds this way. She needs to be able to see her friend. Problem is if she's not tame you will need another cage with lots of food in it to entice her and tie a string to the door so you can shut it when she's in the cage. Good luck.