female mandarin duck
鴦 refers specifically to the female mandarin duck, a bird known for its pairing symbolism.
鴦 combines 央 (center) with 鳥 (bird). The character likely uses 央 for its sound to name the female mandarin duck, a bird often paired with the male (鴛).
The top 央 looks like a person standing under a roof, and the bottom 鳥 is a bird. Picture a female mandarin duck nesting safely in the center of a pond, under overhanging branches.
For オウ, imagine the female duck saying 'Oh!' (オウ) as she sees her reflection in the water, right in the center of the pond.
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