Abgesehen von der Spannung gibt es natürlich noch die reinen Kollisionen mit den Drähten. Dies betrifft alle Leitungen.
Ansonsten noch dazu:
ELECTROCUTION
shocking fate for thousands of endangered falcons.
Throughout the world birds are electrocuted or collide with inappropriately designed power infrastructure. The risks will increase unless the proliferation of new
unsafe infrastructure is addressed. Electrocution occurs when a bird bridges the gap between two different phased energized components or an energized and an earthed (also called “grounded") component of the pole structure. Electrocution mainly involves larger species that perch or nest on wires or poles.
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400 electrocuted Saker falcons collected from under just 50km of powerlines in Mongolia during a 1-year study
Low to medium voltage lines pose the greatest risk. One impacted species is the globally Endangered Saker Falcon, listed on Appendix I of the Convention on Migratory Species in 2011 in response to evidence of declines in certain populations of this species, which has been closely monitored due to its cultural and economic significance.
Data from Mongolia indicates that at least 5000 Saker falcons are electrocuted annually in that country. Similarly, data from Hungary shows that the number of Saker falcons electrocuted tends to be significantly under-estimated. The global population of the Saker Falcon is estimated at a median number of 10,900 breeding pairs. (BirdLife 2013). Electrocution is the principle threat recognized in the Saker Falcon Global Action Plan (CMS 2014). Saker GAP Objective 1 is to ensure the impact of electrocution on the Saker is significantly reduced .
http://iucncongress.ipostersessions.com/GetFile.ashx?file=d5b281c1-6055-4159-9ade-8d8c6199a2be.jpgThis issue affects other large bird species, particularly in open landscapes where perches are limited. Many affected species, including vultures and eagles, are of conservation concern, currently showing significant declines and social or environmental significance.
There is urgent need for the provision of electricity supply infrastructure in developing countries e.g., through the US Agency for International Development’s “Power Africa Initiative”. Appropriate design creates a win-win situation for birds and for the stability of power supplies. Significant efforts have been made in many places to address this issue through the formation of partnerships between conservationists and electricity supply utilities or through the development of MoUs with government agencies.
CMS has addressed this issue in recent resolutions, it provides comprehensive information and guidance on the means to address it and has established an Energy Task Force to reconcile development with migratory species conservation.
Effective strategies exist which reduce bird mortality caused by power infrastructure, including the avoidance of key areas important for birds and avoidance of key flyways. Simple design modifications can significantly reduce the risk of collision/electrocution.
There are also simple effective and relatively inexpensive measures to mitigate existing dangerous infrastructure and such dangerous infrastructure must be identified. Electrocution of large birds may severly damage infrastructure and mitigation measures represent additional expense.
The Proponent of this Recommendation, with support of the Co-sponsors, intends to alert and inform governments, power suppliers and funders, providing tools to assist them in ensuring that future infrastructure is bird-safe and in mitigating dangerous existing infrastructure.
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The most dangerous infrastructure involved the 15 kV lines. The two types of poles which kill birds are those made of concrete and steel. In former times wooden poles were used, which were much safer.
Tens of thousands of birds of prey are electrocuted on power lines worldwide every year. The situation is especially bad in Central Asia where a minimal estimate of 5000 globally endangered Saker Falcons are killed each year along with thousands of other birds of prey including eagles. The Saker Falcon is the focus of an extensive programme to provide artificial nesting sites, producing over 2500 young falcons last year, but the number of young produced in this conservation project is dwarfed by those are electrocuted when they perch on poorly designed power poles.
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Electrocution is a widespread threat to many bird species
The International Association for Falconry and Conservation of Birds of Prey is proposing a motion at this IUCN World Congress to to include the financial institutions in the fight to preserve Sakers and all the other birds that are being electrocuted on unsafe poles in their millions - all over the world.
Janusz Sielicki, Keiya Nakajima, Dan Cecchini, Robert Kenward
International Association for Falconry and Conservation of Birds of Prey (IAF.ORG)
