1. superlative form of fledgy; most covered with feathers or down; most resembling a young bird that has recently grown feathers
Usage: rare; chiefly ornithological or literary

Examples

• The fledgiest chicks in the nest were nearly ready to leave the branch.
• Among the young birds, the fledgiest ones showed the strongest wing development.
• The ornithologist noted that the fledgiest specimens had the most complete plumage.