Three of the UK’s largest bats, Noctule, Serotine and Leisler’s bats have been recorded through the project. Whilst only comprising about 1% (6,300) of all bat recordings, the Noctule was third most commonly recorded bat species in 2013 and 2014. In comparison, Serotine made up about 0.5% (2,417) of recordings and Leisler’s about 0.05% (277) of total recordings from 2013 and 2014.

Serotine in 2013 / 2014 - maximum number of bat passes recorded