Dadia-Lefkimi-Soufli Forest

Dadia-Lefkimi-Soufli Forest National Park is located in the Evros regional unit of northeastern Greece, near the town of Soufli in Eastern Macedonia and Thrace. The park protects an extensive complex of oak-dominated forest, scrub, and rocky terrain covering approximately 73,694 hectares, making it one of the largest protected forest areas in Greece. The park is internationally renowned as one of the most important raptor sanctuaries in Europe, supporting breeding populations of 36 of the 38 diurnal raptor species recorded in Europe, including the highly endangered black vulture (cinereous vulture). The park's significance for vulture conservation has made it a flagship site for European raptor conservation.

Dadia-Lefkimi-Soufli is celebrated for its extraordinary raptor diversity. The black vulture, with fewer than 400 breeding pairs in Europe, maintains its only Greek breeding population here, with approximately 30–40 pairs nesting in the park's old-growth oak forest. Griffon vulture, Egyptian vulture, and bearded vulture are also present. Seven eagle species breed in the park including the lesser spotted eagle, short-toed snake eagle, and long-legged buzzard. Large mammals include wolf, golden jackal, roe deer, wild boar, and stone marten. The park lies along a significant migration corridor for raptors crossing between Europe and Africa through the Bosphorus.

The park vegetation is dominated by extensive oak woodland, primarily composed of sessile oak, Lusitanian oak, and mixed oak species forming the dense forest habitat essential for nesting black vultures. The forest understory includes various shrubs and herbaceous species. Pine forest, both natural and planted, occurs in portions of the park. Open areas of scrubland and rocky terrain with phrygana vegetation (dwarf shrub communities) provide hunting habitat for raptors. The Evros River and its tributaries support riparian gallery forest of alder, willow, and poplar. The botanical diversity of the park reflects its transitional position between Mediterranean and Pontic floristic zones.

The landscape of Dadia is underlain by Paleozoic and Mesozoic metamorphic rocks, gneisses, and schists characteristic of the Rhodope massif. The rolling terrain with rocky outcrops and exposed cliff faces provides nesting sites for cliff-nesting raptors. The Evros River basin has deposited alluvial soils along the valley floor. The geology is generally older and more complex than the limestone-dominated landscapes of southern and central Greece, reflecting the park's northern Aegean position within the Rhodope crystalline complex. Soils are predominantly acidic brown forest soils supporting the oak woodland community.

The park has a continental-influenced Mediterranean climate, significantly more continental than southern Greek parks due to its northeastern location. Winters are cold with regular snowfall and temperatures falling to -5 to -10°C. Summers are warm and relatively dry, averaging 28–30°C in July. Annual precipitation is approximately 550–700 mm, concentrated in winter and spring. The transitional climate supports a flora and fauna mixing Mediterranean and Eurasian continental elements. The spring and autumn migration seasons bring extraordinary raptor diversity through the park, with soaring columns of thousands of raptors visible on favorable thermaling days.

The forests of the Evros region have been managed by local communities for centuries, with selective timber harvesting and charcoal production historically important. The town of Soufli has an ancient silk production tradition — the local mulberry plantations and silk factories operated since Byzantine times. The region was historically part of the Ottoman Empire until the Balkan Wars (1912–1913), retaining a diverse population mix of Greeks, Bulgarians, and Turkish-speaking communities. The Evros River forms the border between Greece and Turkey, and the region's geopolitical significance has influenced land management. Traditional grazing maintained open areas within the forest that provide raptor hunting habitat.

Dadia-Lefkimi-Soufli received initial protection in 1980 as a nature reserve, with national park status extended and formalized in subsequent years. WWF Greece has played a critical role in establishing and managing vulture feeding stations (hides) in the park since the 1990s, significantly enhancing the black vulture population and enabling ecotourism. The park was designated a Special Protection Area under the EU Birds Directive and a Natura 2000 site. International conservation attention was attracted by scientific surveys in the 1980s that documented the exceptional raptor diversity and identified the threat to the black vulture from declining food availability and human disturbance.

The park's main attraction is raptor observation, particularly from the official observation post near the vulture feeding station that operates from spring through autumn. The feeding station can attract hundreds of vultures including the spectacular black vulture, griffon vulture, and Egyptian vulture simultaneously. Hiking trails through the oak forest provide opportunities for bird observation throughout the park. The park ecomuseum in Dadia village offers educational exhibits on the park's biodiversity and vulture conservation. A network of forest tracks is accessible for guided 4WD tours. Spring (April-May) and autumn (September-October) are the best periods for raptor diversity.

The park visitor centre and ecomuseum are located in the village of Dadia, 60 km north of Alexandroupoli. Accommodation is available in Dadia village and in Soufli. Guided observation tours to the vulture feeding station are organized through the park visitor centre and require advance booking in peak season. Alexandroupoli has a domestic airport with connections to Athens and other Greek cities and is the nearest major city. Public transport to Dadia is limited; a private vehicle is recommended. Entry to the main observation area is ticketed. The park is open year-round, with raptor diversity peaking in the migration seasons.

The park faces ongoing challenges from secondary poisoning of vultures — particularly from poisoned carcasses set illegally by farmers to control predators targeting livestock — which has caused significant mortality in the black vulture population. Habitat degradation from agricultural expansion on the park periphery and changes in traditional grazing that affect open habitat availability also threaten the park. Climate change may alter the composition of the oak woodland over coming decades. The WWF feeding station program has been essential in supporting vulture populations through supplementary feeding. Anti-poisoning campaigns and livestock compensation schemes aim to reduce illegal poisoning.