A bird's feathers represents more than just gaudy plumage. In many cultures across the globe, feathers are believed hold spiritual power, as such, they are integral parts of many tribal rituals. From as far back as the early days of mankind, humans have always valued feathers for their beauty.
Professional certification, trade certification, or professional designation, often called simply certification or qualification, is a designation earned by a person to assure qualification to perform a job or task.
To describe someone as a real professional implies that they can be relied on to carry out their work competently and conscientiously regardless of the circumstances. A professional piece of work means a piece of work that meets established standards of quality. There is no single definition of a profession. The meaning of the word depends on who is using it and what the context is. Substantial education and training are required in order to practise the profession.