One example ( there are others peppered throughout ): "Research with captive
grey parrots, especially Irene Pepperberg's work with an individual named
Alex, has demonstrated they possess the ability to associate simple human words with meanings, and to intelligently apply the abstract concepts of shape, colour, number, zero-sense, etc."
The ability to do the above need not require consciousness. It might however require what we generally think of as intelligence. The two are not necessarily connected. For example, computers with cameras and microphones can correctly identify language and colors. But are they experiencing any of it? Are they even intelligent? Or are they just crunching numbers? I posted a possible test for consciousness in the Philosophy, Science, and The Unexplained thread with respect to the Delayed-choice quantum eraser experiment. But I am not sure if it actually represents an accurate test. It's rather mind bending.
Of course Wallace Stevens had a poem for this (actually many contemplating the nature of consciousness and behavior in birds) . . .
"The Bird With The Coppery, Keen Claws"
by Wallace Stevens
"Above the forest of the parakeets,
A parakeet of parakeets prevails,
A pip of life amid a mort of tails.
(The rudiments of tropics are around,
Aloe of ivory, pear of rusty rind.)
His lids are white because his eyes are blind.
He is not paradise of parakeets,
Of his gold ether, golden alguazil,
Except because he broods there and is still.
Panache upon panache, his tails deploy
Upward and outward, in green-vented forms,
His tip a drop of water full of storms.
But though the turbulent tinges undulate
As his pure intellect applies its laws,
He moves not on his coppery, keen claws.
He munches a dry shell while he exerts
His will, yet never ceases, perfect cock,
To flare, in the sun-pallor of his rock."