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Dieren en planten



body length: 6-8 centimeters
wing span: 30-38 centimeters


15-35 grams


red-brown to yellow-brown


maximum 20 years



Hibernation period:

November to early April


number: one young per year
birthing period: June

  • Dut: laatvlieger
  • Eng: Serotine
  • Fre: la sérotine (commune)
  • Ger: die Breitflügelfledermaus
  • Lat: Eptesicus serotinus
, Pierre Bonnet


Serotine bats are relatively large bats. They leave their colony later in the evening than the common noctule, which explains its Dutch name 'late flyer'. People often mix up these two species because they are about the same size. You can see serotines flying in the twilight around street lanterns, along the edges of woods and above water. They are busy hunting insects. During the day, the bats are found in buildings, in cavity walls, under roof tiles, behind partitions and in attics. They rarely fly further than 3 kilometers from their roosting sites. Serotines usually spend the winter close by their roosting site.

On Texel

Serotines are the most common bat on Texel. You find them flying all over the island, particularly in the Eijerlandse Polder. There are at least 7 known colonies spread over 9 locations. In 2010, there were a total of 227 females counted.

  • Rabies

    The serotine bat is sometimes contaminated with rabies. This is an extremely dangerous disease, also for people. Therefore, should you find a bat never touch it with bare hands. Catch it by placing a box or tin can over it (the same way you catch an insect you don't want to kill). Shove a piece of cardboard over the opening to contain the animal and bring it to an appropriate address.