Bats in the boreal zone are at the very northern edge of their distribution range. Due to their insectivorous diet, their existence is governed by the seasonal availibility of their food. Bats at northerly latitudes, such as Finland, are living their lives on a knife-edge with regards to their energy budgets, which has cascading effects on their annual timing of parturition, swarming, feeding and overwintering success. Therefore populations are particularly sensitive to disturbance, such as the transition to green energy production, urbanization, climate change and loss of habitats. BatLab Finland aims to identify and quantify the effects of disturbance on bat populations to facilitate the implementation of effective conservation measures.