Cave Stirge Swarm
Medium natural beast (swarm)
Level 6 Brute XP 250

Initiative +6        Senses Perception +7; Darkvision
Swarm Attack aura 1; each enemy that starts its turn within the aura takes 5 damage.
HP 84; Bloodied 42
AC 18; Fortitude 15, Reflex 16, Will 17
Resist half damage from melee and ranged attacks; Vulnerable 10 against close and area attacks
Speed 2, fly 6 (hover)

(⚔) Bloodsucking Swarm (standard, at-will)

+9 vs AC; 1d8+4 damage, and ongoing 5 damage (save ends).

Alignment Unaligned        Languages -
Skills Stealth +11
Str 8 (+2)      Dex 16 (+6)      Wis 19 (+7)
Con 14 (+5)      Int 1 (-2)      Cha 4 (0)

Published in Draconomicon: Metallic Dragons, page(s) 104.