Frequencies of British Bats

There are 17 species of bat resident in the UK and all can be heard with a bat detector with an echolocation range of 18-120kHz.

The table below indicates the frequencies at which you are most likely to receive the stongest signal for any given bat species. However, the exact 'peak' frequency may vary according to the individual bat and the habitat in which it is flying.

Learning to differentiate species is a skill which can take some time to learn. Some bats are simple to identify with the aid of a detector because the call is so distinctive, or few or no other bats echolocate at the same frequency. Others are harder to differentiate and other information about the bat such as wing shape, flight patterns or details of the habitat my be helpful.

 

 


 

                    

Echolocation 
Frequency

 Bat Species  

       

 20-25 kHz 

          

   Noctule

 25 kHz

   Leisler's

 27 kHz

   Serotine 

 32 kHz

   Barbastelle

 39 kHz

   Nathusius's Pipistrelle

 43-46 kHz

   Alcathoe

 45 kHz

   Common Pipistrelle

 45 kHz

   Whiskered

 45 kHz

   Brandt's

 45 kHz

   Daubenton's

 45-50 kHz

   Brown Long Eared

 45-50 kHz

   Grey Long Eared

 50 kHz

   Natterer's

 50 kHz

   Bechstein's

 55 kHz

   Soprano Pipistrelle

 80 kHz

   Greater Horseshoe

 108 kHz

   Lesser Horseshoe





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