Flutterwing

Flutterwings are gargantuan flying insects found on Gallifrey. Adult flutterwings grew to 3 metres by 25 metres in size and, once they took off for the first time in their life, woudl never land, staying in the air until their death. There are five species of flutterwing: Wild Endeavor, Mandrigal, Silver-band, Blue Crystal, and Perdition. Two of these species, Wild Endeavor and Perdition, were likely named for the locations they are found on, as Perdition is a Gallifreyan mountain and Wild Endeavor is a continent.