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Providing evidence to improve practice

Individual study: Reducing lighting reduces seabird groundings over four years in the Outer Hebrides, Scotland

Published source details

Miles W., Money S., Luxmoore R. & Furness R.W. (2010) Effects of artificial lights and moonlight on petrels at St Kilda. Bird Study, 57, 244-251


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Turn off lights to reduce mortality from artificial lights Bird Conservation

A before-and-after study on St Kilda, Scotland, between 2005 and 2008 (Miles et al. 2010) found that fewer seabirds were attracted to artificial lighting and downed when lighting was reduced at night, compared to when normal lighting was in place (27 birds found when lighting was reduced for the whole of autumn 2007 and most of 2008 vs. 54 birds downed and two dead when lighting was not reduced in 2005-6 and 24 downed in 20 days when lighting was not reduced in 2008). Downed birds included 59 Manx shearwater Puffinus puffinus (including all birds downed by reduced lighting), one European storm petrel Hydrobates pelagicus and 45 Leach’s storm petrel Oceanodroma leucorhoa. Lighting consisted of outdoor lights and indoor lights left on overnight with no window coverings.