The South Scotland Golden Eagle Project (SSGEP) has today announced the death of a young golden eagle after it collided with a wind turbine in Galloway in August this year.
The bird was a three-year old male called ‘Sparky’. He wasn’t one of the eagles translocated to south Scotland from the north by the SSGEP, but rather he fledged from one of the few remaining nests in south Scotland prior to the translocation project, but was carrying a satellite tag provided by that project, which helped in the swift recovery of his corpse.
Of course, Sparky’s death from collision with a turbine blade is a tragedy, but it’s important to view it from a broad perspective.
Golden eagle mortality from wind turbine collisions in Scotland is, thankfully, a rare occurrence. That’s not down to luck, or chance. It’s largely to do with detailed wind farm planning and choosing areas for turbines that are not located in habitats preferred by golden eagles.
A group of expert golden eagle ecologists, collaborating under an umbrella organisation called the Golden Eagle Satellite Tag Group (GESTG) has developed several models to predict significant areas of topographical use by golden eagles based on thousands of satellite tag records. The most recent model, called the GET (Golden Eagle Topographical) model, is now commonly used in Environmental Impact Assessments for judging the potential impact on golden eagles by proposed new wind farm sites across Scotland, and it works pretty well.
As an illustrative example, here is an image showing the movements of a satellite-tagged golden eagle that Chris Packham and I are tracking in the Monadhliath Mountains, on the western edge of the Cairngorms National Park. The red lines show the eagle’s movements around the footprint of three large windfarms and you can see that avoidance behaviour by the eagle is quite clear. (Thanks to Dr Alan Fielding for the data analysis and map).
This eagle’s avoidance strategy is not uncommon. Peer-reviewed scientific research papers by the GESTG have demonstrated that both young, dispersing non-territorial satellite-tagged golden eagles (here), as well as older territorial satellite-tagged eagles (here) will generally avoid wind farms if they have not been sited in prime golden eagle habitat.
I don’t know much about the Environmental Impact Assessment undertaken for the Windy Rig Wind Farm in Galloway where Sparky was killed but it’s probably worth noting that it was consented in 2017 (and became operational in 2022) at a time when there were very few golden eagles in south Scotland so perhaps golden eagle collision risk wasn’t assessed to be high.
I fully expect the death of Sparky to be pounced upon by the raptor persecution deniers within the game-shooting industry, who will no doubt be jumping up and down, pointing fingers and announcing, ‘There! See? We told you that wind farms are killing golden eagles, it’s not us gamekeepers“, as they’ve been doing for years, for example this headline from 2017:
Alas, for them, the scientific evidence simply doesn’t support their claims (read the two linked papers above and also see Chapter 8 of the authoritative 2017 report by Drs Fielding & Whitfield: Analysis of the Fates of Satellite Tracked Golden Eagles in Scotland, where the authors examined whether any of the 41 tagged eagles that had ‘disappeared’ in suspicious circumstances were within the vicinity of a wind farm (spoiler alert – no, they weren’t, but illegal killing on a number of grouse moors was indicated).
Raptor collisions at wind farms has been a huge problem in some countries, notably in the USA at Altamont Pass in California where a long network of turbines was installed along the very ridgeline that migrating golden eagles use to take advantage of wind updrafts as they fly south. Anti-wind farm campaigners often point to these sites and assume that just because many golden eagles were killed at sites such as Altamont, it must mean that golden eagles are being killed at other wind farm sites. That’s simplistic nonsense, but some from the grouse-shooting industry have jumped on this to try and deflect attention away from the illegal shooting, trapping and poisoning of golden eagles that goes on in Scotland.
But it doesn’t wash anymore, and thank goodness the Scottish Government saw through the propaganda when it made the decision to introduce a grouse moor licensing scheme a couple of years ago.
That’s not to say that we should be unconcerned about golden eagles colliding with turbines – of course it needs to be monitored and the imminent construction of even more on-shore turbines needs to be carefully curated to ensure they’re built in the most appropriate locations, but thanks to ongoing satellite tag data analysis by experts in the GESTG, those potential impacts can be minimised.
Raptor Persecution UK 