The Da Vinci Notebooks at sacred-texts.com
The falcon never preys but on large birds; and it will let itself die rather than feed on little ones, or eat stinking meat.
As regards this vice, we read that the peacock is more guilty of it than any other animal. For it is always contemplating the beauty of its tail, which it spreads in the form of a wheel, and by its cries attracts to itself the gaze of the creatures that surround it.
And this is the last vice to be conquered.