Serotine Bat
VUVulnerable

Serotine Bat

Eptesicus serotinus

# Serotine Bat (Eptesicus serotinus) The Serotine Bat is a large European bat species with a wingspan reaching 35-38 cm and distinctive golden-brown fur. These nocturnal mammals emerge late in the evening to hunt beetles, moths, and other flying insects using echolocation.

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Countries

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Serotine_bat

01Classification

Taxonomy & Classification

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Chiroptera

Family

Vespertilionidae

Genus

Eptesicus

Serotine Bat belongs to the family Vespertilionidae, order Chiroptera, within the Mammalia class.

02Description

Species Profile

# Serotine Bat (Eptesicus serotinus) The Serotine Bat is a large European bat species with a wingspan reaching 35-38 cm and distinctive golden-brown fur. These nocturnal mammals emerge late in the evening to hunt beetles, moths, and other flying insects using echolocation. As aerial insectivores, they provide significant pest control services, consuming thousands of insects nightly and helping maintain ecological balance in agricultural and urban environments. Serotine Bats inhabit an exceptionally broad range spanning Europe, Asia, and parts of Africa, from the United Kingdom to South Korea and extending south to South Africa. They demonstrate remarkable habitat adaptability, roosting in buildings, tree cavities, and rock crevices across diverse terrestrial environments including woodlands, farmland, parks, and urban areas. Despite their wide distribution, Serotine Bats face mounting pressures from habitat fragmentation and building renovations that destroy roost sites. Intensive agriculture reduces insect prey availability, while artificial lighting disrupts their nocturnal foraging patterns. Climate change may be altering insect emergence timing, potentially creating mismatches with bat breeding cycles. Wind turbines pose collision risks in some regions. Conservation efforts focus on protecting known roost sites through building surveys and legal protections. Several European countries have implemented bat-friendly building guidelines and created wildlife corridors to connect fragmented habitats. Monitoring programs track population trends, though comprehensive data remains limited across much of their range. The species' current trajectory remains uncertain due to insufficient population data. While their adaptability to human-modified landscapes provides some resilience, continued habitat loss and emerging threats suggest ongoing vulnerability without sustained conservation intervention.

The Serotine Bat faces significant population declines primarily due to habitat loss from agricultural intensification and urban development, which reduces both roosting sites and insect prey availability. Additional pressures include building renovations that destroy roost sites, pesticide use that depletes food sources, and climate change affecting insect populations and hibernation patterns.

Key Facts

IUCN StatusVulnerable (VU)
GroupMammals
03Habitat

Habitat & Distribution

TERRESTRIALMajorTERRESTRIALMajor
04Threats

Threats

Habitat loss from agricultural intensification

HighOngoing

Loss of roosting sites due to building renovation and demolition

HighOngoing

Climate change affecting prey populations and hibernation

MediumOngoing

Pesticide use reducing insect prey availability

MediumOngoing

Urban development and infrastructure expansion

MediumOngoing
07National Status

National vs Global Threat Status

How this species is assessed at the national level compared to its IUCN global status (VU).

CountryNational StatusGlobal StatusComparison
EULCLeast ConcernVUVulnerableLower local risk
EULCLeast ConcernVUVulnerableLower local risk

National Red List data sourced from the National Red List Project (nationalredlist.org, ZSL) and country-specific Red List authorities.

Community

Community Sightings

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07Sources

Sources & Attribution

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

National Red Lists: ZSL (2025). National Red List. Zoological Society of London. Available at: https://www.nationalredlist.org

This page: SpeciesRadar (2025). Serotine Bat (Eptesicus serotinus). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/serotine-bat

Full citation guide & data usage terms