Name: カラスは人間と同じくらい賢い？ (Are Crows As Smart As Humans?)
Uploaded: 2021-01-14T06:31:23.000Z
Duration: 3 min 46 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

You know how a group of crows is called a murder? Turns out that murder can be pretty scary.

so we know how crazy smart animals like dolphins, pigs, chimps and octopuses, octopi are…

right? Oh god I might have to talk about cephalopods in a future episode, god they’re cool. Anyway,

have you thought about that murder of crows sitting outside your house?

Scientists used to think that one of things that separated humans from animals was the

making of and use of tools, like spears and stuff. But that all changed when researchers

like Jane Goodall realized that chimps use sticks as tools to get ants out of logs. Suddenly

Scientists consider the corvid family, which includes crows, magpies, and ravens, some

I guess big things come in small packages. Despite that tiny brain span, crows are no

One of the most famous examples of crow intelligence is the way they make hooks to get food. One

study published in the journal Philosophical Transactions B found that crows on New Caledonia,

a South Pacific island, take stripes of leaves and shape them into hooks to get food out

of tricky places, like grubs out of tree stumps.

Another study in PLOS One found that they understand complex concepts like water displacement.

Like in Aesops fables when a bird drops a pebble in a glass to raise the water level

so he can drink it, they can actually do that.

There’s all sorts of stories of crows getting clever for food. In Japan, crows will place

walnuts in the middle of the road, then fly away and wait for a car to drive over them,

cracking it open. If it doesn’t work the first time, the crow will move the walnut

to another place in the road and try again.

I mean most human kids don’t know how to use a tool to get something they want before

the age of two and can’t understand volume displacement until the age of 5 or 7. So you

could say crows are smarter than your average child. that is terrifying.

And some studies show that they understand analogies and there’s some anecdotal evidence

that crows do stuff for the fun of it, like sledding down a snowy roof on a bottle cap

or putting poop in deer’s ears. Yeah I’m not kidding on that one.

How do they do this if they have such tiny and different brains. Well one study published

in the journal Nature Communications describes how. Most of our big brained smarts lies in

the prefrontal cortex. Scientists think this area is responsible for things like reason

and controlling emotions. But birds don’t have this. Their smarts evolved convergently,

or independently from ours. Instead, the seat of crow’s intelligence lies in the nidopallium

caudolaterale. This part of the brain helps the crow form memories, learn and even make

Why did they evolve such complicated brains? I mean they are birds. Researchers think their environment plays

a big role. The crow family can be found in variety of ecosystems and eat a variety of

food, so they’d have to be able to adapt to changing landscapes. Like humans, they

are very social creatures. And solving both social and ecological problems required bigger

and one last note, don’t be a dick to a bird. He’ll remember. Scientists from the

university of Washington found that the birds would remember faces that were mean to them in the past.

Whenever the researchers walked around campus, the birds that they had previously

captured or trapped would scold them! But not just those birds, other crows that had

never been trapped before also scolded the researchers! Which means the crows are a talking.

If you piss one off, you might piss off a whole murder.