El milano real en España. II Censo Nacional (2004) - SEO/BirdLife

Summary
where the population remains stable, and for Catalonia, where a population increase
has occurred (figure 3).
The breeding red kite census for the Basque Country shows that the population
has decreased by 50% in Álava province. In 1994, between 0 and 10 pairs were
estimated for Galicia and the northern Spanish coast, and the census for La Rioja
yielded no results. The breeding population remains stable in Navarra with
263 pairs, although changes in the distribution range have been identified.
Aragón had 386-527 pairs in 1994, decreasing to 258-363 in 2004. Despite this
overall picture, the situation within provinces is very different. Huesca province
used to host almost 80% of the breeding pairs in Aragón, but the population has
undergone a decline from 305-441 pairs in the 1994 census to 169-245 pairs in
the 2004 counts. Moreover, the 5-10 pairs estimated for Teruel province in 1994
may have disappeared completely from this area. On the contrary, the breeding
numbers seem to have increased slightly in Zaragoza, where current records are
89-118 pairs.
The number of breeding pairs in Catalonia has doubled since the 1994 census,
unlike the overall trend dominating elsewhere in Spain.
Castilla y León hosted 50% of the total breeding pairs in Spain in 1994. Subsequent
censuses show a decrease for the region between 36.6% and 43%, with
different trends for the various provinces.The breeding numbers remain stable in
Palencia and León, both with populations of a similar size.The population in Valladolid
has increased from 33-34 to 41 pairs, and the population in Soria has
doubled to reach a current record of 97 pairs. In Burgos, the number of pairs has
gone down from 30-50 to 23, and the same trend occurred in the three main
breeding provinces. In Zamora, an average decrease of 45.6% has been estimated
for the period 1994-2004, and Salamanca has lost more than half of its breeding
population. Segovia was, in 1994, the province having the largest pair density
average, similar to the average for central European countries (Viñuela et al.,
1999); a decade on, the decrease could be up to 70-80% for this province.
The negative trend for the species in Spain is also reflected in Castilla-La Mancha,
with records for 20-23 pairs in 2004. Of these, 16 pairs are recorded in Toledo,
which had 30-37 pairs in 1994. Only 3 pairs, 2 of them in the Parque Nacional
de Cabañeros, seem to remain in Ciudad Real from the 15-20 pairs estimated ten
years ago. Cuenca province maintains a population of 1-4 pairs located in the
surroundings of Cuenca city and the Cabrejas mountain pass. As in 1994, no
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