Velddrif, Western Cape, South Africa – April 13, 2026 – A groundbreaking research initiative spearheaded by BirdLife South Africa is poised to illuminate the extraordinary long-distance migrations of shorebirds, marking the first time such advanced tracking technology has been deployed on these species within the country. This ambitious project aims to unravel the complex migratory patterns, identify critical stopover and breeding sites, and ultimately bolster international conservation efforts for globally threatened species.
The initiative focuses on fitting satellite tracking devices, alongside colour-ringing and extensive monitoring, to iconic migratory shorebirds such as the Curlew Sandpiper ( Calidris ferruginea) and the Grey Plover ( Pluvialis squatarola). Key coastal sites in the Western Cape, including the ecologically vital Berg River estuary in Velddrif, are serving as crucial staging grounds for this research. These species are known to undertake arduous journeys from their South African wintering grounds to the high Arctic mainland for breeding. However, the precise details of their routes along the Africa-Eurasian Flyway, the critical habitats they depend upon, and the challenges they face have remained largely enigmatic.
This undertaking represents a significant milestone for ornithological research in southern Africa. While tracking studies have been conducted extensively along other segments of the Africa-Eurasian Flyway, the number of tagged birds originating from or passing through South Africa has been minimal, leaving a substantial knowledge gap regarding the migratory behaviour of populations wintering in the region. This project is pioneering the application of sophisticated tracking devices to long-distance Palearctic migratory shorebirds within South Africa for the first time, specifically targeting the Curlew Sandpiper and Grey Plover.
The Science Behind the Journey: Tracking Technology and Collaboration
The deployment of miniature, lightweight satellite tracking devices is central to this research. These devices, carefully fitted by qualified bird handlers, transmit precise location data at regular intervals, allowing researchers to reconstruct the birds’ migratory pathways with unprecedented accuracy. This data will be complemented by on-the-ground observations and colour-ringing, which aids in identifying individual birds and understanding their behaviour within local habitats.
The project is a testament to robust international collaboration, drawing expertise from a consortium of leading scientific institutions and conservation organizations. Key partners include the Department of Ornithology at the esteemed Max Planck Institute for Biological Intelligence in Germany, Wetlands International based in the Netherlands, the renowned FitzPatrick Institute of African Ornithology at the University of Cape Town, and Conserve Eden, an organization based in Plettenberg Bay. This multidisciplinary approach ensures a comprehensive understanding of the migratory phenomenon from multiple perspectives.
Financial backing for this critical research has been generously provided by the Royal Society for the Protection of Birds (RSPB) in the United Kingdom and the Ecological Restoration Fund, also based in the UK. Their commitment underscores the global importance placed on understanding and protecting migratory bird populations.
This latest fieldwork in the Western Cape builds upon previous research conducted by BirdLife South Africa, notably the monitoring of European Rollers in the Kruger National Park. That earlier project highlighted the diverse range of habitats within South Africa utilized by migratory species, further emphasizing the country’s role as a vital destination and transit point for international bird migration. The logistical challenges of accessing remote field sites have been significantly eased by the long-term loan of a 2025 Subaru Forester from Subaru Southern Africa, demonstrating vital support from corporate partners.
Unveiling Migratory Mysteries and Informing Conservation
The primary objective of this research is to generate high-resolution movement data. By combining satellite tracking with continuous on-the-ground monitoring, scientists aim to map out detailed migration routes, pinpoint crucial refuelling sites, and uncover previously unknown ecological connections between geographically distant regions. This granular data is indispensable for developing effective flyway-scale conservation strategies, which recognize that the fate of migratory species is intrinsically linked to the health of habitats across multiple countries.
Jessica Wilmot, Flyway & Migrants Project Manager at BirdLife South Africa, articulated the significance of the project: "BirdLife South Africa has dedicated many years to working along the West Coast, and this project is a natural extension of that long-standing commitment. It vividly demonstrates not only how landscapes are interconnected within South Africa but also how shorebirds serve as living bridges, linking us to critical wetlands across the entire continent. In the wake of the recent Ramsar Conference of the Parties 15 held in Victoria Falls, this research serves as a timely and potent reminder of the indispensable ecological role these wetland ecosystems play."
The implications of this research are far-reaching. Both the Curlew Sandpiper and the Grey Plover are currently listed as globally Vulnerable on the IUCN Red List, facing significant threats throughout their migratory cycles. Understanding their precise movements and identifying critical habitats along their flyway is paramount for implementing targeted conservation interventions. Without this knowledge, conservation efforts can be fragmented and less effective, failing to address the full spectrum of challenges these birds encounter.
Early Revelations: A Glimpse into Diverse Migratory Strategies
Even in its nascent stages, the tracking data is already yielding fascinating insights into the diverse migratory strategies employed by these shorebirds. Initial movements have revealed varied departure patterns: while some individuals have begun their journey eastward, a significant number have commenced a steady northward migration along the western edge of the African continent.
Remarkably, two tracked birds have already reached the vast Sudd wetlands in South Sudan, a critical ecological region in East Africa. Another individual is reported to be in close proximity, in the eastern Central African Republic. Further north and west, two shorebirds have been observed in Angola, a country with extensive coastal and inland wetlands. Simultaneously, three other individuals have established temporary residences in the Makgadigadi Pans Key Biodiversity Areas in Botswana, a globally significant wetland system.
These early observations underscore the complexity of migratory behaviour within a single population. They suggest that different individuals may utilize distinct routes and stopover sites, potentially influenced by factors such as weather patterns, resource availability, and individual physiological condition. This variability presents both a challenge and an exciting opportunity for conservationists and the public alike. The near real-time tracking data allows for unprecedented engagement, enabling people to follow the birds’ epic journeys and foster a deeper connection with these remarkable creatures.
Broader Context: Palearctic-African Migratory Bird Flyway
The Africa-Eurasian migratory bird flyway is one of the most complex and extensive in the world, spanning thousands of kilometers and connecting breeding grounds in the Arctic and temperate regions of Eurasia with non-breeding areas across Africa. Millions of birds undertake these annual migrations, relying on a network of critical habitats – wetlands, grasslands, coastlines, and forests – for resting, feeding, and breeding.
The conservation of these migratory species is a shared responsibility, necessitating international cooperation and coordinated action. Threats such as habitat degradation and loss, pollution, climate change, and unsustainable hunting practices impact birds at various points along their flyway. Research like that conducted by BirdLife South Africa is vital for identifying these threats and advocating for their mitigation.
The Palearctic-African Flyway is particularly important for a large number of shorebird species, many of which are experiencing population declines. These declines are often attributed to pressures in both their breeding grounds in the Arctic and their non-breeding grounds in Africa, as well as along the migratory routes themselves. The Curlew Sandpiper and Grey Plover are emblematic of this challenge, undertaking some of the longest migrations of any shorebird species.
Future Implications and Public Engagement
The data gathered from this project will not only inform scientific understanding but will also directly influence conservation policy and practice. By identifying critical stopover sites that may be under threat, conservation organizations can advocate for their protection. Understanding the full extent of the migratory routes will allow for the establishment of transboundary conservation initiatives, ensuring that birds are protected throughout their annual cycle.
Furthermore, BirdLife South Africa is committed to making this research accessible to the public. The ability to follow the birds’ journeys in near real-time offers a powerful tool for raising awareness and fostering public support for conservation. Educational materials and online platforms will be developed to share the findings and inspire future generations of conservationists.
For those interested in supporting this vital research and contributing to future tracking efforts, BirdLife South Africa has provided a dedicated portal: https://www.birdlife.org.za/shorebirdtracking. Donations and engagement through this platform will directly aid in the continuation and expansion of these critical studies, ensuring that the remarkable journeys of South Africa’s migratory shorebirds are understood and protected for years to come. The success of this initiative promises to revolutionize our understanding of avian migration and strengthen the global commitment to conserving these irreplaceable natural wonders.
