Swarm of Bats
Source: SRD / Basic Rules
title: Swarm of Bats
*Medium beast, Unaligned*
- **Armor Class** 12
- **Hit Points** 22 (`5d8`)
- **Speed** 0 ft., fly 30 ft.
|STR|DEX|CON|INT|WIS|CHA|
|:---:|:---:|:---:|:---:|:---:|:---:|
| 5 (-3)|15 (+2)|10 (+0)| 2 (-4)|12 (+1)| 4 (-3)|
- **Proficiency Bonus** +2
- **Saving Throws** ⏤
- **Skills** ⏤
- **Senses** blindsight 60 ft., passive Perception 11
- **Damage Resistances** bludgeoning, piercing, slashing
- **Condition Immunities** [charmed](rules/conditions.md#charmed), [frightened](rules/conditions.md#frightened), [grappled](rules/conditions.md#grappled), [paralyzed](rules/conditions.md#paralyzed), [petrified](rules/conditions.md#petrified), [prone](rules/conditions.md#prone), [restrained](rules/conditions.md#restrained), [stunned](rules/conditions.md#stunned)
- **Languages** —
- **Challenge** 1/4
## Traits
***Echolocation.*** The swarm can't use its blindsight while [deafened](rules/conditions.md#deafened).
***Keen Hearing.*** The swarm has advantage on Wisdom ([Perception](rules/skills.md#Perception)) checks that rely on hearing.
***Swarm.*** The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny bat. The swarm can't regain hit points or gain temporary hit points.
## Actions
***Bites.*** *Melee Weapon Attack:* `+4` to hit, reach 0 ft., one creature in the swarm's space. *Hit:* 5 (`2d4`) piercing damage, or 2 (`1d4`) piercing damage if the swarm has half of its hit points or fewer.Environment
underdark, mountain, hill, urban