Puzzlingly, many birds add human-made material to their nests with no obvious function – now there is evidence that these home improvements might ward off predators
Več na: https://www.newscientist.com/article/2481300-why-birds-decorate-their-nests-with-weird-and-unnatural-objects/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
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