You can't fail to see exciting birds in Extremadura but there are some species that would be easily missed if you didn't know particular places to look for them. Finding Birds in Extremadura describes the most popular birdwatching areas around Trujillo and Monfrague and other areas too and includes specific information on exactly where to find the best birds.
No other book highlights the best sites so clearly and tells you exactly where to go, in such detail and with such precise maps.