๐—ฆ๐˜‚๐—บ๐—บ๐—ฎ๐—ฟ๐˜† ๐—ผ๐—ณ 663rd ๐—ฑ๐—ฎ๐˜† ๐—ผ๐—ณ ๐—–๐—ต๐—ฎ๐˜๐˜€๐—ต๐—ฎ๐—ฎ๐—น๐—ฎ(11/1/2022)

๐—ฆ๐˜‚๐—บ๐—บ๐—ฎ๐—ฟ๐˜† ๐—ผ๐—ณ 663๐—ฟ๐—ฑ ๐—ฑ๐—ฎ๐˜† ๐—ผ๐—ณ ๐—ฐ๐—ต๐—ฎ๐˜๐˜€๐—ต๐—ฎ๐—ฎ๐—น๐—ฎ
(11/1/22)

:diamonds:We started the discussion about how crow has better cognition than sparrow, using a mirror test.

*:diamonds:Walking behaviour of sparrow and crowโ€ฆ

:diamonds: Crow is smarter than sparrow because crow can walk forward and backward, as well as jumpโ€ฆ
But in the case of sparrow it can only jumpโ€ฆ that compared to crowโ€ฆ
Sparrow and Crowโ€™s mental ability was different, crow is very smart.

:diamonds:If we put the mirror into sparrow, they break the mirror, They canโ€™t identify their ownโ€ฆ Thatโ€™s an example for mental ability of sparrowโ€ฆ

:diamonds:Then we jumped in to the evolutionโ€ฆ

:diamonds:We ( human beings ) are more flexible than monkeys and apesโ€ฆ
Just looks the hand and thumb of monkeys, apesโ€ฆ They are different from humansโ€ฆ Thatโ€™s also the part of evolutionโ€ฆ

:diamonds:Then we discussed about our ancestorโ€™s brain size and our ( Homo sapiens ) brain size,Our brain size is larger than most of our ancestorsโ€ฆ

:diamonds:Our Ancestorsโ€ฆ

  • Dryopithecus,
    Ramapithecus,
    Australopithecus,
    Homo Erectus,
    Neanderthalensis
    Homo Sapiensโ€ฆ

:diamonds: Humans would have been extinct had we not possessed technological skills? :face_with_monocle:

:diamonds:And free hand movements including thumbs offered more manipulative skills?

:diamonds:Crows have disengaged motion than sparrow?

:diamonds:What is intelligence?

Some references that taken from the chatbox

:dart:Why Did Humans Lose Their Fur?
We are the naked apes of the world, having shed most of our body hair long ago
https://www.smithsonianmag.com/science-nature/why-did-humans-evolve-lose-fur-180970980/

:dart:
We also found that humans reach by far the highest manipulation complexity, even higher than predicted for our brain size. Human foragers occupy the most complex foraging niche of all mammals57, and forager diet requires intensive processing and relies heavily on enhanced manipulative skills58. https://www.google.com/search?q=common+ancestor+of+human+and+apes&oq=Common+ancestor+of+human+and+apes&aqs=chrome.0.0i512j0i22i30l5j0i390l4.12175j0j7&sourceid=chrome&ie=UTF-8

:dart:
Manipulation complexity in primates coevolved with brain size and https://www.nature.com/articles/srep24528

:dart:
These so-called hominoids โ€” that is, the gibbons, great apes and humans โ€” emerged and diversified during the Miocene epoch, approximately 23 million to 5 million years ago. (The last common ancestor that humans had with chimpanzees lived about 6 million to 7 million years ago.)https://www.google.com/search?q=common+ancestor+of+human+and+apes&oq=Common+ancestor+of+human+and+apes&aqs=chrome.0.0i512j0i22i30l5j0i390l4.12175j0j7&sourceid=chrome&ie=UTF-8

:dart:

few other animal list with flexible thumb. its not only human or apes or monkeys

:dart:

One question in an animal cognition is whether animals other than humans have the ability to recognise themselves. A classic way of testing this, established in 1970 by Gordon Gallup, is the โ€˜mirror testโ€™.https://blogs.scientificamerican.com/not-bad-science/crows-take-a-look-in-the-mirror/

:dart:

Structured finger movements may enhance cognitive as well as motor functions of the brainhttps://www.researchgate.net/publication/299342847_Structured_finger_movements_may_enhance_cognitive_as_well_as_motor_functions_of_the_brain

:dart:
Crow can walk and hop
https://youtu.be/6HE7Fg7Qfj4 - You tube link shared by priti maโ€™am

Others please add your pointsโ€ฆ
@jaikishan sir, @Arunan sir, @komal singh sir, @rati, @KiranyadavR maโ€™am, @Priti_Kanade maโ€™am and othersโ€ฆ

Screenshot_2022-01-12-13-26-33-773_com.whatsapp

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What is mirror test @2020ugchsncnseethala lets discussโ€ฆ how we can understand cognition using mirror test?

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@KiranyadavR lets invite @komal singh on metastudio, we need to discuss how human being evolved to get rid of body fur?

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Sir, The mirror test is a measure of self-awareness developed by Gordon Gallup Jr in 1970. The test gauges self-awareness by determining whether an animal can recognize its own reflection in a mirror as an image of itself.

This is accomplished by surreptitiously marking the animal with an odourless dye, and observing whether the animal reacts in a manner consistent with it being aware that the dye is located on its own body.

@2020ugchsncnseethala can you explain why the dye is used? how does it help? please also share the reference for this mirror test developed by Gordon Gallup Jr

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Ofcourse sir

Reference :
https://www.sciencedaily.com/terms/mirror_test.htm