Lurkwing

For context on this idea, see my post "Where the Ruined Portal Leads (Sculk Dimension Concept)".

The Lurkwing spawns in the areas below and in between the platforms of Deepslate and Sculk that float below the stalactites of the Stealthlands. They only fly above these spaces when three Sculk Shriekers have been tripped. They then attack alongside the other Stealthland mobs until the mob(s) they are attacking have been wiped out, at which point they return to their designated areas. These winged mobs are 2X2X2 blocks in dimension, and are one of the more dangerous Stealthlands mobs.