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Why birds do not fall while sleeping

(news.cnrs.fr)
230 points mdp2021 | 1 comments | 15 Oct 24 08:56 UTC | HN request time: 0.302s | source
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ndheebebe ◴[17 Oct 24 02:17 UTC] No.41865817[source]▶
> The only permanent bipeds of the animal kingdom alongside humans

Kangaroos?

replies(3): >>41865856 #>>41865929 #>>41865978 #
1. xandrius ◴[17 Oct 24 02:47 UTC] No.41865978[source]▶
And the ground pangolin, apparently