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#0038 · 🦊 mammals

Eurasian Serotine

🇳🇱 Laatvlieger ·Cnephaeus serotinus

LCleast concern 🦊 Mammals 📍 in the Netherlands
Eurasian Serotine, photo 1 of 8
1/8 © Mnolf · CC BY-SA 4.0

what is it?

The serotine bat ( Eptesicus serotinus ), also known as the common serotine bat , big brown bat , or silky bat , is a fairly large Eurasian bat with quite large ears. It has a wingspan of around 37 cm (15 in) and often hunts in woodland. It sometimes roosts in buildings, hanging upside down, in small groups or individually.

base stats

  • NL sightings 20iNaturalist, research grade
  • worldwide 2,272iNaturalist observations
  • threat LCleast concern

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • Spotted 20 times in the Netherlands on iNaturalist: the #38 most seen of the mammals in NL.
  • 2,272 observations worldwide on iNaturalist.

fact sheet

English
Eurasian Serotine
Nederlands
Laatvlieger
scientific name
Cnephaeus serotinus
class
Mammalia
order
Chiroptera
family
Vespertilionidae
IUCN Red List
LC · least concern
in NL
native
sightings in NL
20
sightings in Europe
807
sightings worldwide
2,272
weight
—
length
—
lifespan
—

IUCN in Dutch: niet bedreigd. Blank means the sources don't say.

relatives· Vespertilionidae

Sources: iNaturalist taxon 1596127, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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