Wings of a Bird

Almost Human, and Sometimes Smarter - N.Y. Times
... Chimps display a remarkable range of behavior and talent. They make and use simple tools, hunt in groups and engage in aggressive, violent acts. They are social creatures that appear to be capable of empathy, altruism, self-awareness, cooperation in problem solving and learning through example and experience. Chimps even outperform humans in some memory tasks.
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Other researchers combine field work showing chimp behavior in natural habitats with laboratory experiments that are created to disclose their underlying intelligence — what scientists call their “cognitive reserve.”
For example, chimps on their own would not sit at a computer responding with rapid touches on the screen as a test of their immediate memory. Videos of their doing just that at Kyoto University in Japan especially impressed the symposium scientists.
Tetsuro Matsuzawa, a Kyoto primatologist, described a young chimp watching as numbers 1 through 9 flashed on the computer screen at random positions. Then the numbers disappeared in no more than a second. White squares remained where the numbers had been. The chimp casually but swiftly pressed the squares, calling back the numbers in ascending order — 1, 2, 3, etc.
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The emotions of caring and mourning have been observed, as in the case of the chimp mother that carried on her back the corpse of her 2-year-old daughter for days after she had died. After fights between two chimps, scientists said, others in the group were seen consoling the loser and acting as mediators to restore peace.
Devyn Carter of Emory described the sympathetic response to a chimp named Knuckles, who was afflicted with cerebral palsy. No fellow chimp was seen to take advantage of his disability. Even the alpha male gently groomed Knuckles. ...