本帖最后由 人与自然 于 2013-1-28 01:07 编辑
The mistle thrush is fast disappearing from the UK's gardens, wildlife experts warned today as they urged people to take part in an annual survey to collect information about bird species.
Results from the RSPB's annual Big Garden Birdwatch survey have shown that mistle thrushes are now being seen in fewer than half the number of gardens they were spotted in 10 years ago.
The RSPB is urging the public to take part in this year's survey, which takes place this weekend, to help gather important information on how mistle thrushes and other garden bird species are faring.
Under threat: Sightings of the mistle thrush are down 28 per cent between 1995 and 2010 and wildlife experts are asking the public to look out for them and other birds in the annual Big Garden Birdwatch survey
But some birds have seen their fortunes improve, with garden birds such as blue tits, great tits and coal tits on the increase since 1979.
And goldfinches, which were absent from the Big Garden Birdwatch in its early years, have featured regularly in the top 15 species spotted since 2004.
Fast disappearing: House sparrow numbers have fallen by two-thirds between 1979 and 2010
Read more: http://www.dailymail.co.uk/sciencetech/article-2268080/Wildlife-experts-sound-warning-disappearing-mistle-thrush-urge-public-help-survey-UK-garden-birds.html#ixzz2JCKJeJ2b | 
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