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Wind Turbines Decimating S Africa Eagles

June 5, 2021

By Paul Homewood


h/t Trevor Shurmer






  1. MrGrimNasty permalink
    June 5, 2021 4:02 pm

    The ‘tone’ of that article is utterly bizarre, like it is all some dreadful unfortunate blameless random incident but they’re riding to the rescue. The dangers of wind turbines to birds and bats are well known, and the especial danger to raptors. They installed them in the full knowledge that they would be lethal.

    There was the infamous Crete/Griffon Vulture study.

    And Spain fatalities.

    We all know it’s a wholesale slaughter globally and it’s inevitable some species will be made extinct by windmills.

    I’ve noticed an odd trend in BBC articles of late.

    Having failed to report/covered up the enormous environmental disaster that is ‘green’ energy, and its manifest failings, they have started producing articles that triumphantly promise to solve the issues that they have erstwhile failed to adequately acknowledge.


    Most bizarre.

    • June 5, 2021 6:47 pm

      The what-about-ery must be getting to them 😆

    • Graeme No.3 permalink
      June 5, 2021 11:18 pm

      The same deaths in Tasmania for the island variant of the Wedge Tail Eagle.
      Tasmania is also home for numerous Greens incl. Bob Brown (ex leader of the party) who is now campaigning against a proposed huge new wind farm on the grounds that it is on the migration route for birds crossing Bass Strait to the mainland.
      He’s never done or said anything about the eagles that I’ve heard, but he has been against any developments.

    • mwhite permalink
      June 6, 2021 8:41 am

      We had to destroy it to save it.

  2. June 5, 2021 4:32 pm

    Wind turbines kill so many birds of prey and bats for a most curious reason.


    Truly. Bugs.

    Explaining Wind Turbine Lethality

    My best to all,


    • June 5, 2021 5:56 pm

      Willis, splattered insects might explain some bird collisions, but aren’t relevant to offshore turbines, of which we have a multiplying multitude here in the UK. I understand you’re about to grow a few crops of them over in the US.

    • Luc Ozade permalink
      June 5, 2021 11:23 pm

      Nice to see you over here Willis. Hope you’re well.

  3. June 5, 2021 4:47 pm

    I am sure they have all dies with smiles on their faces (beaks) in the certain knowledge that they are dying in a good cause which is saving the planet and of course species from man made ecological disaster…err…oh!

  4. June 5, 2021 5:29 pm

    Some more reports & studies on this issue:

    Click to access birdlife-international-report-to-the-bern-convention.pdf

    I have scanned this report and it seems reasonably balanced.

    This on the other hand is quite wishy washy. I was drawn to one statement :

    ” A study considering predictions of collision risk models, using white-tailed eagle data, highlighted the effect increasing survey effort has on reducing the uncertainty around estimates of the numbers of likely collisions”.

    Quite why onshore sites need to use fiddle factors beats me. What is wrong with collecting the carcasses? Yes some will get carried away by foxes etc but that number will be much more accurate and less prone to fiddling than statistical methods. It should be made MANDATORY that those running such sites collect all carcasses. The other side to this of course is how the windfarms affect bird behaviour. 2020

    An evaluation of bird and bat mortality at wind turbines in the Northeastern United States 2020

    Avian Collisions with Wind Turbines: Aug2001

    Estimates of bird collision mortality at wind facilities in the contiguous
    United States 2013

    Click to access lossetal2013windfacilities.pdf

    Differential mortality of birds killed at wind farms in Northern Portugal 2014

    Bird and bat species’ global vulnerability to collision mortality at wind farms revealed through a trait-based assessment 2017

    Estimates of aerial vertebrate mortality at wind farms in a bird migration corridor and bat diversity hotspot 2020

    • June 6, 2021 11:06 am


      I think this quote: “A study considering predictions of collision risk models, using white-tailed eagle data, highlighted the effect increasing survey effort has on reducing the uncertainty around estimates of the numbers of likely collisions” relates to surveys of birds before construction of the wind farm. If you know how many birds spend time in the virtual box in which the turbine forest is going to be placed, you can estimate how many birds will fly through it when the turbines are operating.

      That is actually a part of the assessment that “works”. After that comes massive uncertainty: how many birds are displaced, how many continue to use the area, what height they fly at, how good are they at avoiding collisions, etc.

  5. June 5, 2021 6:04 pm

    This theme was well explored by Mark Hodgson in his piece at Cliscep “Saving the Planet by Trashing it.”

    Saving the Planet by Trashing it

    In comments beneath I mentioned the shameful behaviour of our SoS, who has permitted Hornsea 3 to go ahead in full cognizance of the fact that it will kill protected birds, including kittiwakes. There is an “IROPI” – an Imperative Reason of Overriding Public Interest – that cancels out the slaughter of seabirds:

    …the principal and essential benefit of the Development as a significant contribution to limiting the extent of climate change…

    • Penda100 permalink
      June 5, 2021 8:34 pm

      Could the SoS tell us what the climate/temperatures will be in 2100 a) with Hornsea 3 and b) without Hornsea 3. And how many birds will be killed in the intervening period if (when) it gets built?

      • It doesn't add up... permalink
        June 6, 2021 12:26 am

        Of course the numbers of deaths will be limited to those necessary to exterminate the population in the early years. The number of unborn chicks in later decades doesn’t count in that calculus.

      • June 6, 2021 10:58 am

        Penda, the very minimum we should demand is cost: benefit analysis of schemes like wind farms. As matters are, the “benefit” is minute to zero, and although we know the cost is sizeable, we don’t have a good handle on how big it is. Quoting myself from a comment under Mark’s article:

      • June 6, 2021 11:02 am

        Wow, dunno what happened there. Tried CTRL-V and it just posted the comment! What I wanted to quote was, by the data from the Hornsea 3 Environmental Statement,

        “…about 60 different numbers for potentially slain kittiwakes are given, from 13 to 395 per year.”

        That looks to me like a 30-fold range in costs, just for the isolated bit relating to kittiwakes. We don’t have a clue, and we aren’t likely to. But we’ll see the kittiwakes dwindling, and blame it on Climate Heating and its Terrible Effects on sand eels.

  6. June 5, 2021 6:25 pm

    Alas, we have to face the fact that, at least for the foreseeable future, wind turbines are not going to go away. Rather they are about to multiply and increase in size. The birds themselves, however, who have a lot more sense than humans, are learning to negotiate them and to teach their young to do the same. This is fine for birds that have a large brood and a relatively short lifespan but not so good for larger birds of prey. Whether seabirds are more or less vulnerable remains to be seen.

  7. George Herraghty permalink
    June 5, 2021 7:41 pm

    Since when did the industrial scale slaughter of Birds and Bats, by the million, become ‘clean green’ energy?

    Every year in Spain alone — according to research by the conservation group SEO/Birdlife — between 6 and 18 million, yes million, birds and bats are killed by wind farms. They kill roughly twice as many bats as birds.

    The Tasmanian Wedge-tailed Eagle is at the point of extinction due to wind farms. Recent research from around the world indicates horrific bird mortality rates:-

    Spain – 330 Birds per turbine per year
    Germany – 309 Birds per turbine per year
    Sweden – 895 Birds per turbine per year

    When will the wind industry be forced tell us the appalling truth?

    And before the absurd is mentioned, I’ve never seen an eagle, gannet or fulmar killed by a cat, car windscreen, or kitchen window!

    • Ben Vorlich permalink
      June 6, 2021 9:41 am

      I have seen two Tawny Owls as road kill, there were a lot round where I grew up, young and niaive and many years ago. On the other hand I’ve had several cats and don’t recall them ever bringing home a present of a raptor or any other bird, rodents and twitching lizard’s tails but no birds. I’ve also seen small birds taken from the garden by raptors (the ones that are oohed and aahed on regional TV news). The increased numbers of raptors, magpies and grey squirrels in urban environments are one reason for changes in garden bird populations.

  8. Dave Gardner permalink
    June 5, 2021 11:52 pm

    Looking at this extract from the BBC article:

    “However, among those who think we shouldn’t dismiss the impact of spinning blades is Dr Christian Voigt at the Leibniz Institute for Zoo and Wildlife Research in Berlin.

    He occasionally visits wind farms to see if dead bats are present on the ground.

    “I actually find carcasses quite often,” he says. “That tells me something’s going wrong here.””

    An issue to note here is that humans are actually not very good at detecting dead bats under a wind turbine. An experiment was carried out a few years ago to see how good humans were in comparison with dogs (the latter having the advantage of a much better sense of smell):

    Humans could only detect 6% of bat carcasses, whereas dogs could detect 96%. Humans weren’t so good at detecting small dead birds either, only detecting 30% of them.

    Voigt’s estimate that each wind turbine (presumably in Germany) kills an average of 10 bats per year (quoted in the article) could be a considerable underestimate if this figure is based on his own observations.

    • Ben Vorlich permalink
      June 6, 2021 9:49 am

      Carrion eaters soon learn where a good spot for a meal is. Hence their presence around roads and motorways. They also learn how to avoid becoming a meal themselves. For small creatures like birds and and bats I would guess bodies quickly disappear, particularly when young have to be fed.

      In my youth I used to work as a pony person on a large deer stalking estate. Each day we’d be followed by ravens on the look out for a meal from the gralloch. Two teams, meant four stags per day enough to keep several ravens happy.

  9. Douglas Dragonfly permalink
    June 6, 2021 2:52 pm

    O/T and what of the far more efficient fore-runner to the wind-turbine ?

  10. June 7, 2021 12:22 am

    Wind turbines won’t last ten seconds in a modern war. Look at Puerto Rico!

  11. Julian Flood permalink
    June 7, 2021 9:53 am

    One of my arguments about a wind turbine above Haverhill was that it threatened the Barbastelle population. The barbastelle is a UK Biodiversity Action Plan species, which
    means that it is a conservation priority on both a local and
    national scale. Apparently they treat the turbines as a large tree and even getting close to a turning blade implodes their delicate lungs.

    Green energy — killing a bat near you.


  12. James Broadhurst permalink
    June 7, 2021 11:40 pm

    A Grid spokesperson announced a new policy following the announcement of the Dungeness nuclear closure “It used to be that you needed these big power stations to keep everything safe and secure and stable, but there are lots of new processes and techniques we can use on wind farms to do this.”

    Like switching them off …..

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