Crane Power Line Mitigation: Marking and Rerouting for Welfare

Power line collision is a leading cause of crane mortality globally, with marking and rerouting interventions providing cost-effective welfare protection.

Key Facts

Power line collision kills an estimated 25 million birds annually in Europe, with cranes among the largest victims
Common cranes are particularly vulnerable — their size and flocking behavior increase collision risk
Bird flight diverters — spiral or swinging markers on conductors — reduce collision mortality by 60-80%
Undergrounding power lines in key crane migration routes eliminates collision risk entirely
GIS mapping of crane flight corridors enables targeted marking of the most hazardous line sections
Night flying cranes are at highest collision risk — lines in migration corridors should be prioritized for marking

Welfare Considerations

Crane power line welfare is amenable to practical intervention at relatively low cost per bird protected. Flight diverter installation costs approximately 300-500 EUR per pylon span — modest compared to the conservation value of marked cranes in endangered or declining populations. The targeting of interventions using GPS tracking data from collared cranes has dramatically improved cost-effectiveness by identifying the specific line sections used by migrating flocks. Energy company cooperation, supported in some countries by regulatory mandates, is the critical enabling factor for broad implementation.

What You Can Do

Support European Wilderness Society and RSPB campaigns for mandatory bird diverters on power lines in key bird areas
Contact energy companies operating in crane migration corridors asking about their bird diverter programs
Donate to crane conservation organizations funding targeted power line marking in priority locations
Advocate for planning regulations requiring underground power lines in newly designated Important Bird Areas