Recordings from 2024 and before

To listen to social calls of the serotine bat, you can visit the files of the following lists on Xeno Canto:

- Type A social calls of different species of bats
- Type B (roosting) social calls of multiple species of bats
- Type B (in flight) social calls of multiple species of bats
- Type C.d (high frequency FM) social calls of multiple (flying) species of bats
- Type C.i (low frequency qCF) social calls recorded in the vicinity of maternity roosts

Date of recording: 2024-06-19          Recorded by: Olivier van Aken          Audio file: 914886 

Many social calls of serotine bats that are recorded from within a maternity roost are not particulary distinguishable from those produced by other species in similar settings. However, some call types both look and sound quite distinctive (Middleton et al., 2022). The following recordings of calls emitted from within a maternity roost of at least 30 individuals are examples of those distinctive calls (type A, B and type C):

Date of recordings: 2024-05-18,  2024-05-19,  2024-05-20          Recorded by: Sander Boersma, Sarah Mahie, Boaz van Die          Audio files: 911587, 911588, 911595, 911590, 911591, 911592, 911593, 911594

This species is not often encountered producing social calls while in flight away from the roost (Middleton et al., 2022).  The following type C social calls have an upside-down U-shape, with the exception of the social call in the middle that is mainly dropping down in frequency. The latter call is very similar to the serotine bat social call recorded by U. Marckmann, figure 8.7.1 in the book Social Calls of the Bats of Britain and Ireland (Middleton et al., 2022).

Date of recording: 2024-07-24          Recorded by: Charlotte Serrarens          Audio file: 923069 

During one of our surveys, there was an encountered with two foraging serotine bats. They were flying back and forth through the street when one of the serotine bats suddenly emitted a series of type C high frequency FM-calls.

Date of recording: 2024-06-03          Recorded by: Hannah Floor          Audio file: 911601 

All recordings are licensed under the following Creative Commons Attribution-NonCommercial-NoDerivs 4.0 license and in courtesy of Sarah Mahie.
All the original video footage can be found on our Youtube channel: United by Ecology
All sonograms are screenshots of the recordings imported in the ultrasound analysis software BatExplorer 2.2 (Elekon, Switzerland). 

Literature list:

- Jon Russ (2021). Bat Calls of Britain and Europe: a Guide to Species Identification. Pelagic Publishing. 

- Neil Middleton, Andrew Froud and Keith French (2022). Social Calls of the Bats of Britain and Ireland (second edition). Pelagic Publishing.