Flood swarm form

Flood Swarms are the first flying incarnation of the Flood seen yet, and will be featured in the upcoming Halo Wars.

They were described by developers as "infected buzzards crossed with evil bats". This suckers travel in teeming airborne packs, and can emit barb-like projectiles to puncture enemies. Ensemble Studios have confirmed that Flood Swarms are not the only airborne Flood units, a much larger and deadlier creature will also appear.