Tree Sparrows
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- čas přidán 23. 01. 2012
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A project is under-way to find out more about the Tree Sparrow - nobody knows why, but the Irish Tree Sparrow population is growing while numbers of Tree Sparrows are in sharp decline elsewhere in Europe.
![Eurasian Tree Sparrows in the States [NARRATED]](http://i.ytimg.com/vi/0USfbSeraLw/mqdefault.jpg)
