Mammal

Gray Bat

Myotis grisescens

Gray Bats gather in a limited set of limestone caves and emerge at dusk in dense streams. Uniform gray fur and long narrow wings suit rapid foraging above rivers and reservoirs where aquatic insects rise after dark.

Cave SpecialistAerial InsectivoreColonial Bat

—observations

—countries

—peak records

VulnerableConservation status

Key facts

Diet & preyMayflies, Caddisflies, Moths

Predators

Owls
Raccoons
Snakes

ThreatsCave disturbance, altered waterways, water pollution, habitat loss, and fungal disease

HabitatsLimestone caves for roosting and waterways, reservoirs, and riparian forest for feeding

Life spanOften more than 10 years, with some individuals living beyond 15 years

Classification

FamilyVespertilionidae
SpeciesMyotis grisescens

Range & activity

Native

Safe observation

Interaction riskModerate

Low
Moderate
High
Very high

Why interaction risk is moderate: Bats can bite and may carry rabies; never handle one, and seek medical guidance after exposure.
Why it is dangerous: Tiny teeth can puncture skin, and possible rabies exposure requires urgent medical assessment even when a bite mark is difficult to see.
How to recognize a risky encounter: Gray Bats have uniformly gray fur and wing membranes attaching near the ankle rather than at the toes.
What to do: Never touch a grounded or roosting bat; isolate people and pets, then contact wildlife and public-health professionals.
What to notice: Look for uniform gray bats emerging in fast groups from limestone caves and feeding low over nearby water.
Support conservation: Stay outside roost caves, obey every closure and gate, avoid bright lights, and watch outdoor emergence from a respectful distance.

Responsible observation

Dusk: Watch outdoor flight paths from well away from a cave entrance.
Ethics: Avoid lights, noise, and any entry into occupied or gated caves.

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