When I have had one of my birds escape, I take a smaller cage to put another bird inside. I then place that cage inside a much larger one (luckily, I have an aviary, but just a large cage with a door that's easy to find should work). Leave the door on the large cage open. The escapee will come to it and go inside to get on top of the smaller cage to be closer to the other bird. When it does, you can close the door on the larger cage and have your bird back.