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Climate change threatens survival of mountain birds

Published: 02/10/2009 05:00

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The experts of bird protection warned that global warming had been increasingly posing a threat to the living environment of the alpine birds.

A professional meeting on bird protection is currently held in Portschach, Austria, by an international organization for bird protection “Bird Life” in cooperation with the German “Ornithologists Association.”

Participating experts pointed out that global warming had been making the alpine vegetation changed, the living space of snow finch and other mountain birds had been squeezed, according to the report released by “Bird Life” on Friday.

There is another survey on the Swiss Alps region, which also showed that since 1990, the number of crooning spigots of snow chicken had at least been decreased by one third. The heat rate mountain cock in Switzerland also dropped by 45 percent from 1971to 2001.

In addition, many of the survival indicators for black grouse, in particular the distribution range, are also in decline.

Austria ornithologist Marc Graf pointed out, under the impact of climate warming, it was expected that, in the following 70 years, “the forest line will move upward with 290 meters” in alpine area.

It means, the mountains in the Alps regions without trees will be very less, and for the mountain birds, it will be a reduction or even loss of habitat.

The participating experts also pointed out that global warming would not only reduce the living space of mountain birds, but also affect the habitat of migratory birds.

Most of European migratory birds move to Africa in winter. However, as the increasingly serious desertification and drought there, the survival of such birds as Eurasian swift, reed warbler has been threatened.

VietNamNet/Xinhuanet

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