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Bat Sound Library


Access the Bat Sound Library (password required)

BCT has created an online bat sound library which features bat calls recorded from tuneable heterodyne detectors. It is an ongoing project which aims to provide recordings of all UK bat species, illustrating the differences and similarities between different species' calls and how they vary in different habitats. It's a great way to brush up on your ID skills and to help train your ear for species counted in the NBMP surveys. 

This resource is exclusively for BCT Members and National Bat Monitoring Programe (NBMP) volunteers. If you fall into one of these categories then BCT will send you your user name and password. If you haven't received these yet then please contact us at or on 020 7820 7179.

Not a Member or NBMP volunteer?

Join BCT now  or sign up to the NBMP. Once we have processed your details you will be sent your user name and password.

Bat Sound Library example page

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Bat Helpline

0345 1300 228