How to Play Papageno

About Papageno, from BoardGameGeek:

In your enchanted kingdom, a flock of colorful birds is flying around. To impress the Queen, will you be able to attract the best specimen to land on your wire? Pick them carefully to score fewer points than the other bird catchers and beware, the biggest birds might cost you victory. In Papageno, players collect bird cards, exchange bigger birds for smaller ones - or vice versa - and create pairs in order to find the perfect balance on their wire. Papageno, Mozart's famous bird catcher, can help attract birds in your garden...or mess with all the players' games. -description from the publisher