According to Pinker (IIRC), the loquacious and the clever-talking are considered attractive independent of culture, so it's not just an analogy; human language is actually equivalent to birdsong in its demonstration of fitness and desirability.
Humans also have brainware with the dedicated purpose of recognizing and distinguishing faces. It's so dominant that we see faces in everything from car grills to pieces of toast. So, compared to peacocks and macaws, we may not be objectively very display-oriented, but as far as the ability to distinguish and the effort we put into distinguishing go, we are very easy to distinguish.
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According to Pinker (IIRC), the loquacious and the clever-talking are considered attractive independent of culture, so it's not just an analogy; human language is actually equivalent to birdsong in its demonstration of fitness and desirability.
Humans also have brainware with the dedicated purpose of recognizing and distinguishing faces. It's so dominant that we see faces in everything from car grills to pieces of toast. So, compared to peacocks and macaws, we may not be objectively very display-oriented, but as far as the ability to distinguish and the effort we put into distinguishing go, we are very easy to distinguish.