Additional Information:
"Ther mighte men the royal egle finde, That with his sharpe look perceth the sonne; And other egles of a lower kinde, Of which that clerkes wel devysen conne. Ther was the tyraunt with his fethres donne And greye, I mene the goshauk, that doth pyne To briddes for his outrageous ravyne." (p. 319)