Overview
With more than 6,000 rivers criss-crossing our land, their denizens often go unnoticed. Solid bones and high oxygen levels mean a dipper bird can dive underwater for 30 seconds.
With more than 6,000 rivers criss-crossing our land, their denizens often go unnoticed. Solid bones and high oxygen levels mean a dipper bird can dive underwater for 30 seconds.
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