Several Goobirds were part of the flying force of Frenemy and Quisling units that invaded the airspace of the City of Goodminton. At least 'a few' of them were shot down by Delphie using air defense spells of Minnow Tower.IPTSF Text 20
Real World References
The name of this unit may refer to the 'Goo Goo Bird' - a character that appeared in Cap'n Crunch breakfast cereal animated TV commercial in 1974.
Alternatively it may refer to a German group named Goo Birds Flight.