Crows still amaze researchers by creating tools from multiple objects [/ b]
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Yes, the intelligence of these crows is impressive. A year or two ago, we saw a very complete report on Arte of a scientific study on an American species.
These crows, for example, sting metal hangers in private individuals who had laid their linen outside, and reformed them to make their nest.
In a lab test, they are able to use 2 tools consecutively, a first tool to open a box where there is a second tool needed to access the food. This is the sign of an impressive project design from the beginning.
We also discover young people who, like teenagers, engage in games and experiences like acrobatic flight.
Finally, and that's what surprised me the most, they have a sense of death. When one of them dies, they all gather in a tree, in silence for a minute or two, and then fly together.
It is to this kind of observation that we understand that between man and animal, there is no difference of principle, only a difference in the level of cognitive capacity.