Birding Sukau, Sabah, Borneo
10,000 Birds
OCTOBER 23, 2023
Not sure why they spend time in Shanghai in winter when they could come here though, but then again, I usually do not understand most of the behavior of humans either. They frequently reuse nest holes, thus saving vital natural resources even though cleaning out the used nest hole takes about one week ( source ). Or speluncaphobia?
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