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Eastern imperial eagle killed ©Milan-Rajic (2)

A mighty predator made helpless at the hands of humans

September 25, 2019
Categories
  • Eastern Imperial Eagle
  • Hungary
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Hungary

The eagle is a long-standing symbol of strength and glory, but though triumphant within the animal kingdom, the predator becomes the prey when the Eastern imperial eagle is confronted with human persecution. Can we restore one of Europe’s rarest raptors?

The beautiful plumage of the Eastern imperial eagle Aquila heliaca truly reflects its regal name. Dark brown with gold flecks throughout its feathers and with a golden crown, it builds nests from vantage points at the tops of trees which reach a magnificent size as they reuse and renovate them year after year. Perched upon their nests, these majestic birds look like royalty atop a throne.

Like other eagles, the Eastern imperial eagle is impressive in terms of power and presence: a thick, hooked beak, sharp talons, keen eyes to target prey, and a wingspan that can stretch over two metres. Equipped with such weapons, the bird can access quite a menu, from ground squirrels, hares and hamsters, to more formidable quarry such as foxes and snakes.

The eagle’s mighty power not only enables it to conquer its prey, but facilitates a remarkable migration. Adults in central Europe, the Balkan Peninsula, Turkey and the Caucasus are usually residents and do not migrate. However, some juveniles decide to set out and explore the world, migrating to southern wintering grounds and returning in spring. Some of these birds fly an incredible distance – travelling as much as 8,000 kilometres in just a few weeks.

But even the strong and mighty have their Achilles heel and for these eagles, that downfall is humans. The Eastern imperial eagle has declined significantly in recent years and is now classed as ‘Vulnerable’ on the IUCN Red List of threatened species. For Central European populations, the biggest human threat they face is poisoning – whether accidental or intentional. Some farmers use legal pesticides to rid their fields of small, crop-destroying rodents, and often when eagles feed upon these prey they unwittingly ingest a dose of poison on the side. This poison can render eagles infertile, or accumulate in their bodies and lead to death.

More devastatingly, imperial eagles (among other predatory animals such as wolves, foxes and other birds of prey) are sometimes directly targeted with illegal poisons by poachers and gamekeepers. The aim, in this so called predator persecution, is to decrease the number of game species ending up in a raptor’s talons, rather than a hunter’s hand.

Following poisoning, the second major threat to this species is electrocution from contact with power lines. Increased felling of tall trees is adding to the risk, as eagles resort to perching on pylons. The only silver lining to this tragic situation is that the eagles are also open to accepting safe, artificial vantage points created by humans.

Eastern imperial eagle ©Marton Horvath

This is one of many initiatives that give us cause for hope – because although the overall population is declining, it’s not too late to save this species. In Hungary, home to two-thirds of the EU’s breeding population, decades of dedicated work from MME (BirdLife in Hungary) have pulled the bird back from the brink. The population has recovered dramatically from 15-25 breeding pairs in the 1970s to roughly 250 pairs now. This is down to a multi-pronged approach including training sniffer dog units to detect the use of poison, operating a hotline for witnesses to report bird crimes, monitoring eagle numbers and creating a rehabilitation centre for injured eagles.

On the back of this success, MME is now leading the PannonEagle Life project – a collaborative mission between Hungary, Slovakia, the Czech Republic, Austria and Serbia. This will involve rolling out methods that have proven to be successful in Hungary across central Europe, with the primary objective of reducing persecution.

The main aims will be the greater enforcement of poisoning laws and increased conviction of those caught in the act. These efforts will be complemented by environmental education – for example, raising public awareness of the minimal impact raptors really have on game bird populations, in order to curb predator persecution. Overall, the project is expected to help central Europe’s Imperial Eagle population to exceed 300 breeding pairs by 2021.

There is something sorrowful about seeing the mighty fall. The Eastern imperial eagle is so well equipped for nature’s challenges, but not for the dangers posed by man. But the success of tried and tested methods at national level gives us great confidence that this species can be rescued globally.

Help the Eastern Imperial Eagle and other migratory birds by supporting our Flight for Survival campaign, which follows the journeys of seven flagship species and highlights the work of our Partners in combatting illegal killing along their route.

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Stichting BirdLife Europe and BirdLife International gratefully acknowledge financial support from the MAVA Foundation, the EU LIFE programme, the European Commission and Vogelbescherming Nederland (BirdLife Netherlands).
All content and opinions expressed on these pages are solely those of Stichting BirdLife Europe.
"Flight for Survival" is partially funded by the LIFE Against Bird Crime project. More information is available here.

Over 25 000 000 million birds are illegally killed around the Mediterranean, Northern Europe and the Caucasus every year. For non-rounded, mean numbers, and minimum/maximum estimates, see: Preliminary assessment of the scope and scale of illegal killing and taking of birds in the Mediterranean (Brochet et al 2016) and Illegal killing and taking of Birds in Europe outside the Mediterranean: assessing the scope and scale of a complex issue (Brochet et al., 2018)

“Flight for Survival” is a BirdLife International campaign managed by Stichting BirdLife Europe to raise awareness about the illegal killing of birds in Italy, Croatia, Cyprus, Greece, Egypt, Lebanon, Bulgaria and Hungary, and their conservation activities to fight this.” The species storylines for this campaign are heavily inspired by the information available on the migration habits of the selected birds.

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