Causal understanding of water displacement by a crow

PLOS Media · 9.8M views · 2014 · 3:18

Open on YouTube

Animals & naturePsychology & human behaviordemo

Why Hacker News recommends it

Used as vivid evidence of crow intelligence and animal physical reasoning in discussions of cognition.

What it is

A silent PLOS ONE video of New Caledonian crows solving Aesop's Fable puzzles by dropping objects to raise water and reach food. It shows example trials from experiments testing causal understanding of water displacement.

Recommended by 3 HN commenters across 3 different months, 2015 to 2023.

What Hacker News said

Recommends lr4444lr · 2016-03 · on “Why Neuroscientists Need to Study the Crow”

The reasoning ability and executive function of birds, crows in particular, is astonishing. Intelligence (certain kinds, at least) may be just as reliant on brain:body mass ratio as it is on overall brain size and complexity. [LINK] [this video]

Recommends danmostudco · 2019-12 · on “Crows could be the smartest animal other than primates”

Crows are astoundingly intelligent. If you're having a slow day, a quick youtube of "crows solving puzzles" yields some great videos of them solving complicated tasks like water displacement to reach food[0]. I believe raccoons share this achievement. Additionally, there was a thread on here some time ago[1] by a Dutch Startup[2] about trying to teach crows to exchange cigarette butts for treats inside a tiny device place in parks, I always thought that was a funny idea if you could get the crows to teach one another. [0] [this video] [1] [LINK] [2] [LINK]

Recommends boltefnovor · 2020-09 · on “Crows possess higher intelligence long thought a primarily human attribute”

This video is a startling verification.of the crows mental capabilities. “Causal understanding of water displacement by a crow” [this video]

Cites acqq · 2015-08 · on “A new Stephen Hawking presentation about black holes”

When you formulate it so, the problem is the question itself, as, except if we are religious believers, we don't have any reason to consider a "soul" (or a "consciousness") to be a "nonphysical entity." Look at the etymology of the "psyche:" it's "the breath." At the time people explained their environment unscientifically they considered that the existence of "breath" makes the difference between the dead and the living person but also between the conscious and the unconscious bodies. Animals do breathe too. But humans saw themselves as "special" in their religious setup. As a kid would ask "does my dog go to heaven too when he dies?" See, we go deeper and deeper in religious explanations w

Cites ozy · 2018-05 · on “Technically, what is Understanding?”

Some animals clearly show understanding up to a level [this video] But they can not explain it to us, so "can explain" is a unnecessary high bar.

Cites throwawaymath · 2018-08 · on “'Intelligent' crows to pick up litter at French theme park”

> I read somewhere about training crows to pickup cigarette butts in exchange food. I’ve always wondered if it would be possible to train a crow to pick up loose coins for food. Probably not. It probably seems like I'm shilling this researcher's blog in this thread at this point but this commentary [1] gives a short explanation of why. One of my hobbies is actually bird watching, particularly with crows. I love the animals, they're very fascinating creatures. I've had the opportunity to interact with many of them because I set out peanuts for them near my neighborhood. They've very gradually become acclimated to this routine, and they reliably arrive to pick up food if I make a particular no

Cites gus_massa · 2019-12 · on “Ask HN: Do animals grasp the concept of solid-liquid-gas?”

It's a very interesting question. I guess big apes can, but I have no proof at all. Also, the extension of the question to the ice-water transition in the other comment is interesting too. Anyway, the first thing that came to me mind was " Causal understanding of water displacement by a crow " [this video]

Cites stared · 2020-06 · on “Why Is the Human Brain So Efficient? (2018)”

I wouldn't say that human brain is that efficient (per volume). Compare and contrast with the brain of rats or Corvidae: [this video] .