What does "parson" mean?

Parson: Any clergyman having ecclesiastical preferment; one who is in orders, or is licensed to preach; a preacher. He hears the parson pray and preach. Longfellow. Parson bird (Zoöl.), a New Zealand bird (Prosthemadera Novæseelandiæ) remarkable for its powers of mimicry and its ability to articulate words. Its color is glossy black, with a curious tuft of long, curly, white feathers on each side of the throat. It is often kept as a cage bird.