eagle
鵰 centers on a large bird of prey: an eagle. It is a specific character for eagle, distinct from the more general bird kanji.
鵰 combines 周 (likely a phonetic component) with 鳥 (bird), forming a character for a specific bird of prey, the eagle. The exact historical development is uncertain, but the structure is a typical phono-semantic compound.
The left side 周 suggests a complete, encircling presence, and the right side 鳥 is a bird. Imagine an eagle circling overhead with a commanding, all-encompassing view.
For チョウ, picture a majestic eagle named Chou soaring high: Chou -> チョウ, and the eagle's cry echoes across the sky.