this post was submitted on 28 Nov 2023
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Science Memes

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[–] Kolanaki@yiffit.net 106 points 2 years ago (4 children)

I once saw a crow look both ways before walking across the street and I thought "Wow. What a dumbass, he could just fly over it and not have to worry about cars."

[–] anton@lemmy.blahaj.zone 42 points 2 years ago

I once saw a human look both ways before walking across the street and I thought "Wow. What a dumbass, he could just walk a mile to the unterpass and not have to worry about cars."

[–] MNByChoice@midwest.social 19 points 2 years ago (2 children)

Cool. I have seen wild turkeys do this and in a crosswalk. It is really cool.

I have not seen them using the button to request the "walking man" yet.

[–] ALostInquirer@lemm.ee 20 points 2 years ago (1 children)

Do you think they might use the button sooner if the symbol was a walking turkey?

[–] clueless_stoner@feddit.nl 12 points 2 years ago

Only one way to know.

[–] force@lemmy.world 5 points 2 years ago* (last edited 2 years ago)

Birds are too powerful to need to use a beg button

[–] sour@kbin.social 18 points 2 years ago

is savings energy

[–] Kerandir@lemmy.world 3 points 2 years ago

😂😂😂😂

[–] Rolando@lemmy.world 94 points 2 years ago (1 children)

I bet a crow would know what to do with that information.

[–] ericisshort@lemmy.world 20 points 2 years ago (1 children)
[–] Westcoastdg@lemmy.ca 10 points 2 years ago

Here's the thing...

[–] youCanCallMeDragon@lemmy.world 41 points 2 years ago (4 children)

You’re supposed to reevaluate brain size as a measure of intelligence. The expression “bird brain” is so outdated we need to stop using it. Bird neurons are significantly smaller than ours, so they can fit a lot more brain in a smaller volume.

While you’re at it, you should probably reevaluate everything about intelligence and memory because apparently jellyfish have memories despite having no brain or ganglia of any kind.

[–] qarbone@lemmy.world 14 points 2 years ago (1 children)

I'm not an older sibling in a 90s-era kids sitcom, so I haven't used the phrase "bird-brain" in decades...

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[–] kaesaecracker@leminal.space 8 points 2 years ago

Also some insects dissolve in their cocoons to a handful of cells and yet still maintain memories from their larva stage

[–] DroneRights@lemm.ee 6 points 2 years ago

I haven't heard anyone say bird brain in the past decade

[–] MonkderZweite@feddit.ch 4 points 2 years ago* (last edited 2 years ago)

Bird neurons are significantly smaller than ours

The neurons themselves? Because human axons are already as small as can be; they sometimes missfire because of this (brain is built around that, no worries).

[–] Spendrill@lemm.ee 33 points 2 years ago (2 children)

Not only that, corvids understand the concept of zero fucks given.

[–] MotoAsh@lemmy.world 7 points 2 years ago

They also understand social order and merc crows that are excessively rude thieves and whatnot. It's a bit brutal but it's indicative of individual identity and longer term memory.

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[–] nodimetotie@lemmy.world 29 points 2 years ago

It's only the beginning. Then they will get negative numbers, integers, reals, you name it

[–] happybadger@hexbear.net 21 points 2 years ago* (last edited 2 years ago) (2 children)

https://www.livescience.com/crows-understand-concept-of-zero.html

https://www.jneurosci.org/content/41/22/4889

ABSTRACT: Different species of animals can discriminate numerosity, the countable number of objects in a set. The representations of countable numerosities have been deciphered down to the level of single neurons. However, despite its importance for human number theory, a special numerical quantity, the empty set (numerosity zero), has remained largely unexplored. We explored the behavioral and neuronal representation of the empty set in carrion crows. Crows were trained to discriminate small numerosities including the empty set. Performance data showed a numerical distance effect for the empty set in one crow, suggesting that the empty set and countable numerosities are represented along the crows' “mental number line.” Single-cell recordings in the endbrain region nidopallium caudolaterale (NCL) showed a considerable proportion of NCL neurons tuned to the preferred numerosity zero. As evidenced by neuronal distance and size effects, NCL neurons integrated the empty set in the neural number line. A subsequent neuronal population analysis using a statistical classifier approach showed that the neuronal numerical representations were predictive of the crows' success in the task. These behavioral and neuronal data suggests that the conception of the empty set as a cognitive precursor of a zero-like number concept is not an exclusive property of the cerebral cortex of primates. Zero as a quantitative category cannot only be implemented in the layered neocortex of primates, but also in the anatomically distinct endbrain circuitries of birds that evolved based on convergent evolution.

SIGNIFICANCE STATEMENT: The conception of “nothing” as number “zero” is celebrated as one of the greatest achievements in mathematics. To explore whether precursors of zero-like concepts can be found in vertebrates with a cerebrum that anatomically differs starkly from our primate brain, we investigated this in carrion crows. We show that crows can grasp the empty set as a null numerical quantity that is mentally represented next to number one. Moreover, we show that single neurons in an associative avian cerebral region specifically respond to the empty set and show the same physiological characteristics as for countable quantities. This suggests that zero as a quantitative category can also be implemented in the anatomically distinct endbrain circuitries of birds that evolved based on convergent evolution.

edit: The idea of zero is always one of those things that seemed like it didn't need big brain mathematicians to develop, like the Pythagorean theorem being a common sense thing you naively get if you've ever walked somewhere with a diagonal shortcut. You have a practical need to understand the absence of something numerical if you are a social animal dealing with resource scarcity. If I forage 10 handfuls of berries and need to distribute that to my group of little monkey-ass things, I don't eat unless I understand that I can give away 9 handfuls but not 10. Even if I knew nothing else about mathematics I'd know 10-10 equals some kind of total absence of berries, with those still existing as a category without a quantity.

[–] Karyoplasma@discuss.tchncs.de 5 points 2 years ago

Isn't the Pythagorean theorem less about the fact that a diagonal is shorter than taking a corner (which is indeed obvious) and more about calculating how much shorter it is?

[–] TrudeauCastroson@hexbear.net 5 points 2 years ago (1 children)

The reason this corvid study is different from intuitively knowing that 10-10=no berries is where this 0/empty set is represented on the numberline.

Considering 0 as a number vs the empty set are two different concepts. It's the difference between having a bank account with $0, vs having no bank account. They don't close your account when you have $0, so it's still an amount of money.

Crows considering 0 on the numberline, and differently from the empty set shows they have a more abstract concept of numbers than we thought.

Idk who authored this study, seems like a very specific kind of person who is both into number theory and neural pathways of birds to design.

[–] Raine_Wolf@lemm.ee 3 points 2 years ago

Or Anthropology. Right now, we have realized that New Caledonian crows have entered an equivalent to the early stone age in humans. Therefore, we can gain a lot of insight both about the nature of technological progression and of the very nature of intelligence (and the differences between mammalian and avian intelligence) by doing these studies.

[–] RIP_Cheems@lemmy.world 19 points 2 years ago (2 children)

It means DONT GIVE THEM A CALCULATOR.

[–] ezures@lemmy.wtf 13 points 2 years ago

Crows WILL divide by zero, DO NOT GIVE THAN A CALCULATOR

[–] RizzRustbolt@lemmy.world 5 points 2 years ago
[–] TWeaK@lemm.ee 19 points 2 years ago

TIL Euler invented crows, but Poe got to name them because he was 2nd.

[–] emptyother@programming.dev 18 points 2 years ago (3 children)

Then they are already smarter than the average Mangalore.

[–] don@lemm.ee 10 points 2 years ago

Now a real killer, when he picked up the ZF-1, he would have immediately asked about the little red button on the bottom of the gun.

[–] catharso@discuss.tchncs.de 8 points 2 years ago

i really enjoyed the mangalorian though. it had weak moments but otherwise was a solid show.

[–] hakunawazo@lemmy.world 3 points 2 years ago* (last edited 2 years ago)

They are not the smartest guys out there, but at least they managed to kill the main bad guy of the movie:

oh sorry

[–] rtxn@lemmy.world 17 points 2 years ago* (last edited 2 years ago) (1 children)

If I've learned anything from Stargate, such knowledge leads directly to the ability to build self-propelled autonomous space mines.

[–] Bishma@discuss.tchncs.de 3 points 2 years ago (1 children)

I'm really glad I wasn't the only person who thought about that episode.

Indeed. raises eyebrow

[–] Ghost33313@kbin.social 16 points 2 years ago

Oh no! They understand my bank statement!

[–] gila@lemm.ee 13 points 2 years ago (1 children)

Everytime I hear this I can't help but imagine some researcher out in the wild taking a twig or something off of a magpie, the swoopy boi retaliates and the researcher is like "corvids understand the concept of zero?!"

[–] Juice@hexbear.net 2 points 2 years ago (1 children)

Someone who wants to hang out with crows. I want to hang out with crows

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[–] Reddfugee42@lemmy.world 12 points 2 years ago (1 children)

Apparently even crows know how useful this is to me.

[–] TWeaK@lemm.ee 10 points 2 years ago (1 children)

Yeah but imaginary numbers are a very real problem, and the solution of which affects you every day.

[–] ALostInquirer@lemm.ee 3 points 2 years ago (2 children)

🤨 Is this an elaborate joke, or is this query itself demonstrative of the reality of the statement?

[–] TWeaK@lemm.ee 8 points 2 years ago (1 children)

Yes.

But seriously yeah, imaginary numbers (square root of -1) just so happens to be a key part of the definition of a sinusoidal waveform, which is what all electromagnetic radiation flows by. Especially power delivered by alternating current, but also digital stuff and general quantum particles and things. So it really affects everything.

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[–] McSudds_@lemmy.world 3 points 2 years ago

The latter, I believe.

[–] pseudo@jlai.lu 12 points 2 years ago
[–] jopepa@lemmy.world 11 points 2 years ago* (last edited 2 years ago)

There’s a crow and seagull war around where I work. Pretty wild sky fights, but otherwise typical bird business. One time I heard what sounded like a tornado of crows outside, so I went out to see if some kind of crow Voltron was assembling. Outside was every crow I’ve ever seen screaming and swooping around one unlucky seagull that was tangled in fishing line and hanging from a tree. I cut it down untangled it and it flew off but what really freaked me out was how quiet all of the crows got when I got involved. I can’t prove it and I don’t know how they did it but I know the crows did this.

[–] asg101@hexbear.net 10 points 2 years ago

Alex the African Grey parrot showed us that he had an understanding of "none" 30 years ago. Good to see Corvid scientists catching up.

[–] don@lemm.ee 8 points 2 years ago

Post a tweet asking wtf you’re supposed to do w that information obviously

[–] Bishma@discuss.tchncs.de 7 points 2 years ago

And if my knowledge of history is worth anything, we didn't learn about zero until the 70's

[–] Transporter_Room_3@startrek.website 6 points 2 years ago (1 children)
[–] Johanno@feddit.de 3 points 2 years ago

They also have the capabilities to divide! 😱

[–] therealjcdenton@lemmy.zip 2 points 2 years ago

That's a gonna make the history books

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