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this post was submitted on 31 Dec 2024
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How are they measuring wasted energy? Like, if a get from point A to point B then how was that energy wasted? How does a penguin waste less? I'm confused by this stat.
Yeah it sounded like bullshit to me since humans are so energy efficient we can hunt by running after animals until they're exhausted. Seems like it's from this 2000 study published in Nature.
Penguins use twice as much calories moving around on land as other similar sized land animals. It was thought this was due to them being more adapted to swimming which resulted in them waddling when they walked on land which was inefficient.
Turns out that thought was only half true. They use more energy to get around on land because they're not adapted to walking, but waddling isn't the cause. Waddling is actually more energy efficient, for the speed penguins move at. The research suggested the excess energy use is due to the muscle fibers in their legs. Their short legs require powerful, but inefficient, muscles to support their large bodies. The waddling might actually be a way to cut down on their energy use while on land.
Former penguin biologist here, it's bullshit.
May I ask, how penguins are soo cute?
Also does penguins perform social communication
They are pretty cute...when they aren't actively slapping or biting you.
Much of their communication is vocal forms of communication with visual displays and violence mixed in. They will great their mates and chicks with vocalizing. For some species, they will display with their eyes and posture. If they need more communication with will bite and slap.
I've no idea personally, but i do remember in that Morgan freeman doco about the penguins, they know each others call (and mate exclusively), so when there's the huge mess of penguins everywhere they really can distinguish 'which one is their partner'.
And to us they all just look (and sound!) the same