Time to get the birdies used to ' upstairs'
Bent Beak and His/Her Brother or Sister both managed to work it out
Some decided to become the Fortress gate keepers
What's the password?
Alden tried to offer Blondie a shortcut.
But He/She had other ideas
Some Chicks thought that looked rather strange.
Others had to stop for a rest (or Oxygen) on the way up.