Conservation Evidence strives to be as useful to conservationists as possible. Please take our survey to help the team improve our resource.

Providing evidence to improve practice

Individual study: The use of flight diverters reduces mute swan Cygnus olor collision with power lines at Abberton Reservoir, Essex, England

Published source details

Frost D. (2008) The use of 'flight diverters' reduces mute swan Cygnus olor collision with power lines at Abberton Reservoir, Essex, England. Conservation Evidence, 5, 83-91


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

Mark power lines to reduce incidental bird mortality Bird Conservation

A before-and-after trial at a wetland site in Essex, England (Frost 2010), installed 500 red, spiral-shaped ‘flight diverters’ (32 cm long, 17.5 cm in diameter) at 5 m intervals along 1.5 km of power lines. In two springs preceding installation (2004 and 2006), 28 mute swans Cygnus olor were killed through collisions with the wires. Following installation, one swan was killed in the springs of 2007 and 2008 combined.