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Redonda Island: A Restoration Success Story and Conservation Role Model, from Rats to Reserve


Redonda Island, Caribbean, seen from above.

Seven years ago, Redonda Island, a remote volcanic outpost in the Caribbean Sea, resembled a desolate lunar landscape, scarred by decades of exploitation. This once-barren island, part of Antigua and Barbuda, had been the site of guano mining operations until the outbreak of World War I. When the miners departed, they left behind a legacy of invasive species, primarily rats and goats, which wreaked havoc on Redonda's fragile ecosystem. However, in recent years, a remarkable transformation has taken place on this remote island. In this blog post, we will explore the inspiring story of Redonda's restoration and the establishment of the Redonda Ecosystem Reserve, highlighting the crucial role of conservation efforts and the lessons it offers for protecting other islands overrun by invasive species.


The Tragic History of Redonda


Redonda's history is steeped in exploitation. Once a guano mining site, this island played a crucial role in the fertilizer industry during the late 19th and early 20th centuries. As the miners departed with their cargo, they left behind a legacy that would haunt Redonda for decades: invasive species in the form of rats and goats. These creatures, unchecked and unchallenged, stripped the island of its greenery, leaving it vulnerable to erosion and degradation. The situation appeared dire, and recovery seemed like a distant dream.


The Restoration Initiative


In 2016, a group of dedicated conservationists embarked on a mission to restore Redonda Island to its natural state. The challenges were immense. Goats, renowned for their cunning, eluded capture, and rats infested every corner of the island. However, the restoration team devised innovative solutions. Their strategy involved a two-pronged approach:


1. Eliminating Invasive Species: Conservationists employed a carefully planned rodenticide to eradicate the invasive rat population while minimizing harm to other species.

Goat clinging of the edge of a rocky mountain. It's looking straight into the camera.

Additionally, the small population of goats, which had been starving due to the island's depleted vegetation, was captured and airlifted off the island.


2. Revegetation: With the removal of invasive species, Redonda's natural flora and fauna began to recover at an astonishing rate. Native trees and grasses once again took root, attracting seabirds such as brown boobies and red-billed tropicbirds. Notably, the critically endangered and endemic Redonda ground dragon population surged thirteenfold since 2017, demonstrating the effectiveness of these restoration efforts.



The Birth of the Redonda Ecosystem Reserve: A Model for Conservation


In a testament to the success of these conservation endeavours, the government of Antigua and Barbuda recently declared the establishment of the Redonda Ecosystem Reserve. This vast reserve spans nearly 30,000 hectares and encompasses not only the island itself but also the surrounding seagrass meadows and coral reefs. This significant step marks a turning point in safeguarding the island's newfound biodiversity.


Redonda's restoration offers a beacon of hope for conservationists around the world facing similar challenges. Removing invasive species has proven to be an effective method for restoring biodiversity on islands, with a 2022 study affirming an 88% success rate. As we reflect on Redonda's journey, it becomes evident that collaboration between non-governmental organizations, governments, private individuals, and agencies can yield remarkable results in conservation.


Furthermore, the positive changes in Redonda are far from over. With vegetation returning to stabilize the island, pressure on the coral reefs and seagrass meadows is expected to decrease, allowing for their recovery. The interconnectedness of seabirds and marine life promises a brighter future for Redonda's ecosystem. This dual approach of effective conservation practices and the anticipation of a thriving ecosystem showcases the potential for restoration efforts to bring back life to even the most devastated environments.


Perhaps the most heartening aspect of Redonda's story is the newfound commitment of the people of Antigua and Barbuda to conservation. Arica Hill, the executive director of the Environmental Awareness Group, notes the significance of locals embracing Redonda as a symbol of conservation action. This shift in perspective holds the promise of a brighter future for Redonda and other islands in need of protection.




The transformation of Redonda Island from a desolate wasteland to a thriving ecosystem serves as an inspiring example of what can be achieved through dedicated conservation efforts. As we celebrate the establishment of the Redonda Ecosystem Reserve, we are reminded that even in the face of seemingly insurmountable challenges, the resilience of nature and the commitment of passionate individuals can lead to remarkable recoveries. Redonda's story is not just one of ecological revival; it is a testament to the power of collective action in preserving our planet's precious biodiversity.


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