←back to thread

Why birds do not fall while sleeping

(news.cnrs.fr)
230 points mdp2021 | 1 comments | 15 Oct 24 08:56 UTC | HN request time: 0s | source
Show context
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 #
dhosek ◴[17 Oct 24 02:25 UTC] No.41865856[source]▶
Kangaroos engage in quadrupedal (actually pentapedal—using their tail as well) locomotion at slow speeds.
replies(4): >>41865870 #>>41865877 #>>41865957 #>>41866210 #
FireBeyond ◴[17 Oct 24 03:39 UTC] No.41866210[source]▶
Indeed, their trademark hopping is actually only really when stressed/startled.

Many of the animal sanctuaries in zoos in Australia actually have little signs telling visitors not to be disappointed if they don't see the animals actually hopping: "Laying down and sunbathing, and the slow walk with their tail is a sign of relaxation and a lack of stress on the animal."

replies(1): >>41866494 #
1. ndheebebe ◴[17 Oct 24 04:48 UTC] No.41866494{3}[source]▶
Oh. I did see one hopping across a local park. I didnt realize it might be stressed. I assumed like a dog they like to run.