Swarm of Bats
Medium Swarm of Tiny Beasts · · CR 1/4
- Swarm of Tiny Beasts
- Medium
- Tier 1
Ranges across hill, mountain, underground, urban, and forest; Swarm of Bats lists at CR 1/4 as a medium swarm of tiny beasts (unaligned). Sourced from Monster Manual (5e 2014) and Monster Manual (5.5e 2024).
Stat Block
- Challenge Rating
- 1/4
- Type
- Swarm of Tiny Beasts
- Size
- Medium
- Alignment
- —
- Speed
- —
- Habitats
- Hill, Mountain, Underground, Urban, Forest
- Sources
- Monster Manual (5e 2014), Monster Manual (5.5e 2024)
Ecology
Bat colonies anchor entire cave ecosystems, fertilizing fungal forests with guano and controlling insect populations. A swarm forms when a colony is disturbed mid-roost, fleeing as a coordinated cloud. They navigate by echolocation, weaving through impossible spaces. Their populations boom and crash with insect cycles, and a sudden absence of bats often signals deeper ecological collapse below ground. Druids monitor swarms as climate indicators and treat them with reverent attention.
Behaviour
Individual bats are gentle and curious, but a disturbed swarm panics in unison and attacks anything blocking escape. They roost socially, grooming each other and sharing food. Once threats clear, the swarm reassembles in its original cave with surprising efficiency. They communicate through ultrasonic chirps that mark food locations and predator warnings. Captive bats can be tamed with patience but lose flock cohesion in isolation.
Origin
Some druidic traditions consider bats to be ancestors of all twilight creatures, predating birds and built for the time when the sky was always dark. Aberrant cults claim certain bat species descend from cloaker spawn that diminished over millennia. Most naturalists simply note that bats appear in fossil records earlier than most mammals, suggesting they are a prime original creation rather than a derived form.
Related Monsters
Frequently Asked Questions about Swarm of Bats
- What is the challenge rating of Swarm of Bats?
- Swarm of Bats's challenge rating is 1/4. A party in this band fits parties just starting out.
- What type of creature is Swarm of Bats?
- By creature type, Swarm of Bats is a swarm of tiny beasts, medium size.
- Where does Swarm of Bats live?
- The bestiary places Swarm of Bats in Hill, Mountain, Underground, Urban, Forest.