Skyrlings are a zerg breed created during after the End War by Abathur as a smaller offshoot of the mutalisk. They were designed as part of Overqueen Zagara's efforts to create adostra, capable of regrowing destroyed worlds. Skyrlings possess a form similar to mutalisks, but are much smaller, with a larger grasping claws and wider wings. They were designed to transport the adostra when they were fully grown.