wren
鷦 refers specifically to the wren, a small bird. The meaning is narrow and concrete, with no broader conceptual center beyond the bird itself.
鷦 combines 焦 (which likely contributes the sound ショウ) with 鳥 (bird) to name the wren. The exact historical development of the phonetic choice is uncertain.
A bird (鳥) that sounds like ショウ (焦): picture a tiny wren perched on a scorched (焦) branch, its small size making it hard to spot.
For ショウ, imagine a tiny wren putting on a show (ショウ) on a burnt branch: show -> ショウ, and the wren sings its heart out.
—