Your comment made me wonder how common it is with birds and it seems to be trait shared with all of them[1]. Pretty interesting. I asked my friend if her bird d

Your comment made me wonder how common it is with birds and it seems to be trait shared with all of them[1]. Pretty interesting. I asked my friend if her bird does that and it only seems to when it's not in a deep sleep yet, but eventually it will close both eyes. [1] https://en.wikipedia.org/wiki/Unihemispheric_slow-wave_sleep https://en.wikipedia.org/wiki/Unihemispheric_slow-wave_sleep