The Osprey in the Odiel Marshes Breaks All 'Records' of Nesting in 2025
The white-tailed eagle has made a remarkable comeback in the Odiel Marshes, a wetland area in Huelva, Spain. Once declared extinct there twenty years ago, it now holds the record for the highest number of chicks of this species across the entire Iberian Peninsula. The year 2025 has been confirmed as the best nesting season yet for the bird in the region.
The reintroduction of the white-tailed eagle began in 2002, but its success has become most evident this year. Twelve breeding pairs have now established nesting territories in the Odiel Marshes, up from previous years. Nine of these pairs successfully raised chicks, with a total of twenty-one ringed between May and July.
SEO/BirdLife, in partnership with local authorities, played a key role in supporting the project. Their efforts included installing specialised nesting infrastructure as part of the Huelva Provincial Wetland Restoration Program. Ornithologist José Manuel Sayago, director-conservator of the Marismas del Odiel Natural Area, led the ringing operations, which identified seven males and fourteen females. The breeding population has also grown more diverse. Females from Cádiz, the Balearic Islands, and Portugal have settled in the Odiel Marshes, improving the species’ genetic health. This influx has helped solidify the area’s reputation as the top nesting site in the Iberian Peninsula for 2025.
The Odiel Marshes now host ten confirmed breeding pairs, with more than twenty chicks ringed this season alone. The ongoing conservation work has transformed the site from a place of local extinction to a thriving habitat for the white-tailed eagle. These results mark a significant milestone for wildlife recovery in southern Spain.
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