𝗦𝘂𝗺𝗺𝗮𝗿𝘆 𝗼𝗳 663𝗿𝗱 𝗱𝗮𝘆 𝗼𝗳 𝗰𝗵𝗮𝘁𝘀𝗵𝗮𝗮𝗹𝗮
We started the discussion about how crow has better cognition than sparrow, using a mirror test.
*Walking behaviour of sparrow and crow…
Crow is smarter than sparrow because crow can walk forward and backward, as well as jump…
But in the case of sparrow it can only jump… that compared to crow…
Sparrow and Crow’s mental ability was different, crow is very smart.
If we put the mirror into sparrow, they break the mirror, They can’t identify their own… That’s an example for mental ability of sparrow…
Then we jumped in to the evolution…
We ( human beings ) are more flexible than monkeys and apes…
Just looks the hand and thumb of monkeys, apes… They are different from humans… That’s also the part of evolution…
Then we discussed about our ancestor’s brain size and our ( Homo sapiens ) brain size,Our brain size is larger than most of our ancestors…
Humans would have been extinct had we not possessed technological skills?
And free hand movements including thumbs offered more manipulative skills?
Crows have disengaged motion than sparrow?
What is intelligence?
Some references that taken from the chatbox
Why Did Humans Lose Their Fur?
We are the naked apes of the world, having shed most of our body hair long ago
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
Manipulation complexity in primates coevolved with brain size and https://www.nature.com/articles/srep24528
These so-called hominoids — that is, the gibbons, great apes and humans — 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
few other animal list with flexible thumb. its not only human or apes or monkeys
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 ‘mirror test’.https://blogs.scientificamerican.com/not-bad-science/crows-take-a-look-in-the-mirror/
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
Crow can walk and hop
https://youtu.be/6HE7Fg7Qfj4 - You tube link shared by priti ma’am