The incredible hydrophobic qualities of Icelandic eiderdown.

The soft down type feathers eider ducks use to warm their nests

https://t.co/rrpKTvSln4 https://video.twimg.com/ext_tw_video/1801668944094445569/pu/vid/avc1/720x1288/KO9B9Am103a0lwHb.mp4?tag=12