The region has a number of "star" birds such as Great and Little Bustard, Spanish Imperial Eagle and Cranes for which it well known, plus a lot of other "quality" birds, such as Black-bellied and Pin-tailed Sandgrouse, Black Stork, Great-spotted Cuckoo, Hoopoe, Roller, Lesser Kestrel, Montagu's Harrier, Vultures - Griffon, Black and Egyptian, Red-rumped Swallow and a good range of warblers.
Because of its location 120 miles from the Mediterranean and 70 miles from the Atlantic at their nearest points, and the variety of habitats it covers, Extremadura offers a wide range of species. The region has two major river systems - the Guadiana and the Tajo - crossing it and facilitating access for migratory species. It also lies on one of the major access routes to the Straits and provides a stopover for birds on passage. The creation of several large reservoirs (the total freshwater shoreline comes to 2,000kms; Orellana is 40kms in length; La Serena is even bigger and ranks as the second largest reservoir in Europe), and the development of vast irrigated areas in the Guadiana basin have encouraged migratory and resident species of waders and ducks to expand their range and numbers.