Osprey distribution is worldwide; however, this species stopped breeding in the 80s in the Iberian Peninsula due to human persecution.
Thanks to the successful Reintroduction Project started in 2003 in Cádiz (Barbate reservoir) and a year later in Huelva (Odiel marshes), by hacking, currently there is a stable Osprey population in Andalusia.
The released fledglings were equipped with conventional radio transmitters for their monitoring. In addition, some satellite transmitters were used to determinate the migration route and settlement sites in sub-Saharan Africa.
Nowadays, the Applied Ecology group of the Doñana Biological Station (CSIC), responsible for the design and scientific monitoring of the Reintroduction Project, continues working in the new population monitoring stage ( control of breeding pairs and overwintering population, location of new territories, detection of possible threats) in collaboration with Migres Foundation and Environmental Administration of Andalusia.