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

- Type A social calls of different species of bats
- Type D social calls of the Common Pipistrelle
- Modified echolocation (hooked calls) of Pipistrellus spp.

The new year starts great with some social calls recorded while counting hibernating bats! These type A social calls were heard from within the building that is a mass hibernation roost. More than 30 individual common pipistrelles were counted using a flashlight through the ventilation captivities, even more were hidden away.

Date of recordings: 2025-01-23          Recorded by: Sarah Mahie          Audio files: 963233, 963234, 963235 

Another really nice find were more of the rare-to-encounter modified echolocation calls:

Date of recordings: 2025-04-29          Recorded by: Boaz van Die          Audio files: 1000574 (Batlogger), 1000575 (Echo Meter)

These type C social calls were also recorded quite early in the season:

Date of recording: 2025-04-03          Recorded by: Sjoerdtje de Boer                   Audio file: 1001698 

The following type C social calls were recorded near a maternity roost while a lot of common pipistrelles were seen swarming in front of, tapping and entering the roost entrance. The next evening, at least 104 individual common pipistrelles were seen leaving the roost.

Date of recording: 2025-06-04          Recorded by: Sarah Mahie, Boaz van Die          Audio files: 1004457, 1004458, 1004459, 1004460         Video footage from: Sarah Mahie, Boaz van Die

And more type C social calls (and type B roosting sounds) were recorded during a similar event with a different maternity roost on a different location:

Date of recording: 2025-06-14          Recorded by: Sarah Mahie          Audio files: 1006424, 1006428, 1006431, 1006433, 1006436         Video footage from: Sarah Mahie

And these type C social calls were recorded in gthe vicinity of a maternity roost:

Date of recording: 2025-06-15          Recorded by: Sander Boersma          Audio files: 1006918, 1006920 

More type C and type B social calls recorded in the vicinity of a maternity roost:

Date of recording: 2025-06-20          Recorded by: Sander Boersma          Audio files: 1008065, 1008066 

During a field visit focussed on swarming serotine bats, a few nice looking type D social calls of the common pipistrelle were recorded alongside serotine bat echolocation:

Date of recording: 2025-05-14          Recorded by: Sarah Mahie          Audio file: 998719

And some more shapes and sizes type D social calls (and two high frequency type C social calls):

Date of recording: 2025-06-08          Recorded by: Sarah Mahie          Audio file: 1005396 

And a little later that evening, these type C socail calls were recorded:

Date of recording: 2025-06-08          Recorded by: Sjoerdtje de Boer, Sarah Mahie          Audio file: 1008567 (Batlogger), 1008570, 1008575 (Echo Meter)

Intriguingly enough, this recording contains a trill-like social call just before the multi-component type D social call! The echolocation calls are pretty high in frequency, but I don't think it's high enough to identify them as soprano pipistrelle (Pipistrellus pygmaeus). Not a single Nathusius' pipistrelle (Pipistrellus nathusii) was recorded during the survey. I have recorded partially joined-up type D social calls of the common pipistrelle before, but this is the first time the components of the call appear almost fully joined-up.

Date of recordings: 2025-06-22          Recorded by: Sarah Mahie          Audio files: 1008689

Some high frequency type C social calls, possibly agonistic in nature against the Nathusius' pipistrelle.

Date of recording: 2025-06-15          Recorded by: Sarah Mahie          Audio file: 1006735 

Date of recording: 2025-06-14, 2025-06-15          Recorded by: Boaz van Die          Audio file: 1006741 

Type C social calls were recorded when bats were seen swarming around and tapping the roof of a building. Two short type A social calls were recorded as well. The locations of two known maternity roosts are nearby in the area.

Date of recording: 2025-06-24          Recorded by: Sarah Mahie          Audio files: 1008953, 1008955, 1008958 

Date of recording: 2025-06-27          Recorded by: Sarah Mahie, Boaz van Die          Audio files: 1009767, 1009768,

Date of recording: 2025-07-01          Recorded by: Sarah Mahie          Audio file: 1010898

Date of recording: 2025-07-01          Recorded by: Boaz van Die          Audio file: 1010902 

These type A, B and C social calls were recorded  just after the bats had returned to their roost (a bat box) in the early morning:

Date of recording: 2025-07-08          Recorded by: Sander Boersma          Audio file: 1013534, 1013539, 1013543, 1013548          Photo by: Sander Boersma

Date of recording: 2025-07-09          Recorded by: Liam Mulder          Audio file: 1014673, 1014674

Date of recording: 2025-07-09, 2025-07-10          Recorded by: Sarah Mahie          Audio file: 1014669, 1014672 (Batlogger), 1014671 (Echo Meter)

Date of recording: 2025-07-12          Recorded by: Boaz van Die          Audio file: 1015588

Note the similarity between the following two occasions where two type C social calls were emitted:

Date of recording: 2025-07-12          Recorded by: Sarah Mahie          Audio file: 1015594, 1015597 

Date of recording: 2025-07-12, 2025-07-13          Recorded by: Sarah Mahie, Boaz van Die          Audio file: 1016856, 1016857, 1016859, 1016860, 1016869, 1016877 (Echo Meter), 1016897, 1016898, 1016899, 1016900 (Batlogger)

Date of recordings: 2025-07-15          Recorded by: Sarah Mahie, Boaz van Die          Audio files: 1017054, 1017104, 1017107, 1017108, 1017109

Recorded with the microphone outside of a slow driving car:

Date of recording: 2025-07-19          Recorded by: Sarah Mahie, Boaz van Die          Audio file: 1017412