2 sets * DigiBirds Bird + Cage + Ring Version 3 Flock Head They move their heads and beaks in time to their birdsongs, and start tweeting or singing to a random choice of 55 pre-set melodies, 34 default and 24 to be unlocked by using the free DigiBirds App. There are 4 distinctive DigiBirds to collect and the 'Flock' DigiBirds all feature a special head style. 2 sets of DigiBirds Flock Head + Ring + Cage Each comes with a Whistle Ring to make your bird sing and to carry on your fingers. DigiBirds can sing solo or switch them to the multi-play 'choir mode' and they sync and sing with other DigiBirds and DigiFriends. Children can choose their favourite DigiBird to be the leader and the other birds will synchronise their movements.