Action: Deter bats from turbines using low-level ultraviolet light
Key messagesRead our guidance on Key messages before continuing
- We found no studies that evaluated the effects of deterring bats from turbines using low-level ultraviolet light on bat populations.
‘We found no studies’ means that we have not yet found any studies that have directly evaluated this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action.
It has been suggested that bats may approach wind turbines because they misidentify them as trees (Cryan et al 2014). Illuminating turbines with ultraviolet light may help bats to differentiate between wind turbines and trees. A study in the USA found that the activity of Hawaiian hoary bats was significantly lower at trees lit with dim flickering ultraviolet lights than at unlit trees (Gorresen et al 2015). However, this has yet to be tested at wind turbines.
Cryan P.M., Gorresen P.M., Hein C.D., Schirmacher M.R., Diehl R.H., Huso M.M., Hayman D.T.S., Fricker P.D., Bonaccorso F.J., Johnson D.H., Heist K. & Dalton D.C. (2014) Behavior of bats at wind turbines. Proceedings of the National Academy of Sciences, 111, 15126–15131.
Gorresen P.M., Cryan P.M., Dalton D.C., Wolf S., Johnson J.A., Todd C.M. & Bonaccorso F.J. (2015) Dim ultraviolet light as a means of deterring activity by the Hawaiian hoary bat Lasiurus cinereus semotus. Endangered Species Research, 28, 249–257.