full-fledged

Adjective

not-comparable of a bird idiomatic

Japanese Meaning

（鳥に対して）十分な羽が生えそろって飛行可能な状態である / （比喩的に）本格的な、完全な、十分な資格や能力、実力が整った

After several weeks in the nest, the full-fledged chick finally ventured out to test its wings.

巣で数週間過ごした後、羽毛が生えそろった雛はついに外に出て翼を試した。

Sense（1）

(of a bird) Having all its feathers; able to fly.

Sense（2）

(idiomatic) Having full qualification, credentials or preparation; entire; real.

After she passes the bar exam, she will be a full-fledged lawyer.