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Rock ptarmigan is a vulnerable species in the southern Pyrenees, with less than 300 pairs and two unconnected populations. Alpine marmot was introduced in the northern Pyrenees between 1955 and 1988, but they rapidly colonised the southern slopes, with an actual estimated population of around 10,000 individuals. Both species are mainly herbivores,...
La lechuza Aegolius funereus es una especie nocturna de bosque que se distribuye ampliamente por todo el mundo. Una de las poblaciones menos estudiadas de esta especie que se distribuye más al sur es la de los Pirineos. Esta población de 500 a 600 parejas, sufrió probablemente una pequeña disminución durante las últimas décadas debido a las práctic...
Alpine marmots were introduced in the French Pyrenees between 1948 and 1988. The exact number of re-introduced individuals is unknown, but it oscillated around 400. The likely preference of marmots for the southern sunny slopes rapidly facilitated their expansion to the southern Pyrenees, where the lack of both natural predators and of important in...
Around 500 individuals of Alpine marmots were re-introduced in the French Pyrenees between 1954 and 1988. Marmots soon crossed the mountains to settle in the sunniest southern slopes. After 40 years or so, estimations of the marmot population in the Pyrenees suggested that there were 10000 individuals. Queries about the presence of marmots in Cerda...
We report the first-ever record of a long-distance movement of a Tengmalm's Owl ringed in the Pyrenees. During a study of the species in Catalonia, a female Tengmalm's Owl that had been ringed in Sahun (Huesca) was captured 333 days later and 156 km away in Setcases (Girona). At both sites the female was found to be breeding in a nest hole. The fir...
Durant el seguiment de la població de Mussol Pirinenc a Catalunya, s’ha produït la primera recuperació llunyana d’aquesta espècie als Pirineus. Aquest és el cas d’una femella recuperada a Setcases, Girona (42º25’N, 00º15’E), la qual havia estat anellada a Sahún, Osca (42º36’N, 00º27’E), 333 dies abans, i després d’haver recorregut 156 km. Aquesta f...