SEO/Birdlife Spain has recently published the results from census of Golden Eagles, Egyptian Vultures, Osprey, Griffon Vultures and Peregrine Falcons in Spain in 2008.
To gather all those date, a huge effort by many people was needed. SEO publishes all the results in free e-books (in PDF format).
Click on the cover of each PDF to download it.
The reports are very detailed, for example the one on the Golden Eagle has 189 pages.
Other results from earlier censuses can be found here (incl. Bonelli’s Eagle, Cinereous Vulture, several harrier species, Eleonora’s Falcon and many other birds):
The new results are very interesting. For example, for the Golden Eagle, the census found 1,553 definite pairs and 216 likely pairs which gives a Spanish population of 1,769 pairs. This makes Spain very important for the conservation of the Golden Eagle in Europe.