The Balloon Pigeon is an edible critter agent for Creatures 3 and Docking Station by D.L. Yomegami. Originally packaged with the Skyswimmer Grendels as part of the CCSF 2009, they are said to use lighter than air gases to float. They were available at Creatures @ CU7. They are currently available at The Realm, in the "CU7 Grendel Breeds" pack as part of the Skyswimmers Pack.