An invasive fish set off a biological domino effect that has already affected bears and elk. Now it threatens trumpeter swans and other birds.
https://www.nationalgeographic.com/environment/2018/07/yellowstone-lake-trout-trumpeter-swan-avian-collapse-animals/
Publicado el
03 de julio de 2018 a las 08:47 AM
por
biohexx1
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