09-27-2020, 11:58 AM
https://www.scientificamerican.com/artic...e-thought/
With enough training, pigeons can distinguish between the works of Picasso and Monet. Ravens can identify themselves in a mirror. And on a university campus in Japan, crows are known to intentionally leave walnuts in a crosswalk and let passing traffic do their nut cracking. Many bird species are incredibly smart. Yet among intelligent animals, the “bird brain” often doesn’t get much respect.
Two papers published today in Science find birds actually have a brain that is much more similar to our complex primate organ than previously thought. For years it was assumed that the avian brain was limited in function because it lacked a neocortex. In mammals, the neocortex is the hulking, evolutionarily modern outer layer of the brain that allows for complex cognition and creativity and that makes up most of what, in vertebrates as a whole, is called the pallium. The new findings show that birds’ do, in fact, have a brain structure that is comparable to the neocortex despite taking a different shape. It turns out that at a cellular level, the brain region is laid out much like the mammal cortex, explaining why many birds exhibit advanced behaviors and abilities that have long befuddled scientists. The new work even suggests that certain birds demonstrate some degree of consciousness.
Interesting stuff. I'm sure some of us will have seen videos like this, where a crow completed a multi-stage puzzle in order to retrieve some food. Since seeing that for the first time several years ago, I've been mystified as to how exactly they can do it - and, this helps to give us some insight.
I wonder how this structure - and its effectiveness - differs from bird to bird?
With enough training, pigeons can distinguish between the works of Picasso and Monet. Ravens can identify themselves in a mirror. And on a university campus in Japan, crows are known to intentionally leave walnuts in a crosswalk and let passing traffic do their nut cracking. Many bird species are incredibly smart. Yet among intelligent animals, the “bird brain” often doesn’t get much respect.
Two papers published today in Science find birds actually have a brain that is much more similar to our complex primate organ than previously thought. For years it was assumed that the avian brain was limited in function because it lacked a neocortex. In mammals, the neocortex is the hulking, evolutionarily modern outer layer of the brain that allows for complex cognition and creativity and that makes up most of what, in vertebrates as a whole, is called the pallium. The new findings show that birds’ do, in fact, have a brain structure that is comparable to the neocortex despite taking a different shape. It turns out that at a cellular level, the brain region is laid out much like the mammal cortex, explaining why many birds exhibit advanced behaviors and abilities that have long befuddled scientists. The new work even suggests that certain birds demonstrate some degree of consciousness.
Interesting stuff. I'm sure some of us will have seen videos like this, where a crow completed a multi-stage puzzle in order to retrieve some food. Since seeing that for the first time several years ago, I've been mystified as to how exactly they can do it - and, this helps to give us some insight.
I wonder how this structure - and its effectiveness - differs from bird to bird?
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