![](http://www.ecns.cn/hd/2020/05/07/c263d38e00e0444fa08c96eb98d61ba7.jpg)
A squirrel reaches out for a common walnut in the Bilychi forest, Kyiv, capital of Ukraine. (Photo/VCG)
![](http://www.ecns.cn/hd/2020/05/07/047b5a86337b4f1ab868487c6b19c1cf.jpg)
A squirrel reaches out for a common walnut in the Bilychi forest, Kyiv, capital of Ukraine. (Photo/VCG)
![](http://www.ecns.cn/hd/2020/05/07/a0d19ce54d19480eaff1804f602bea14.jpg)
A squirrel reaches out for a common walnut in the Bilychi forest, Kyiv, capital of Ukraine. (Photo/VCG)