71 点作者 quuxplusone4 个月前

3 条评论

Here's some nice relaxing mood music as background for the discussion: <a href="https://www.youtube.com/watch?v=CVb2tnFN5AA" rel="nofollow">https://www.youtube.com/watch?v=CVb2tnFN5AA</a>

veunes4 个月前

Wow... geese and ducks filter food like baleen whales

ge964 个月前

Hummingbirds and woodpeckers... why

评论 #42733671 未加载

Let's talk about bird tongues (2014)

3 条评论

Let's talk about bird tongues (2014)

3 条评论