Can A Parrot Be Considered A Reliable Court Witness. This is an excellent article about whether the parrot, the most intelligent bird on the planet, with a gifted ability to mimic human sounds, might be a good witness in human litigation. Since birds don’t have true cognitive intelligence, even though they are said to have the brainpower of a toddler, their mimicry would have to be buttressed by human corroboration, or some other evidence, to be considered probative. Of course, other than the actual litigants, the rest of us just enjoy contemplating the possibility of one of these beautiful birds acting as a star witness.