The sermon that Saint Francis preached unto birds was:
“My little sisters, the birds, much bounden are ye unto God, your Creator, and alway in every place ought ye to praise Him, for that He hath given you liberty to fly about everywhere, and hath also given you double and triple raiment; moreover He preserved your seed in the ark of Noah, that your race might not perish out of the world; still more are ye beholden to Him for the element of the air which He hath appointed for you; beyond all this, ye sow not, neither do you reap; and God feedeth you, and giveth you the streams and fountains for your drink; the mountains and the valleys for your refuge and the high trees whereon to make your nests; and because ye know not how to spin or sew, God clotheth you, you and your children; wherefore your Creator loveth you much, seeing that He hath bestowed on you so many benefits ; and therefore, my little sisters, beware of the sin of ingratitude, and study always to give praises unto God.”
Whenas Saint Francis spake these words to them, those birds began all of them to open their beaks, and stretch their necks, and spread their wings, and reverently bend their heads down to the ground, and by their acts and by their songs to show that the holy Father gave them joy exceeding great. And Saint Francis rejoiced with them, and was glad, and marvelled much at so great a company of birds and their most beautiful diversity and their good heed and sweet friendliness, for the which cause he devoutly praised their Creator in them.
At the last, having ended the preaching. Saint Francis made over them the sign of the cross, and gave them leave to go away; and thereby all the birds with wondrous singing rose up in the air; and then, in the fashion of the cross that Saint Francis had made over them, divided themselves into four parts; and the one part flew toward the East, and the other towards the West, and the other towards the South, and the fourth towards the North, and each flight went on its way singing wondrous songs ; signifying thereby that even as Saint Francis, the standard-bearer of the Cross of Christ, had preached unto them, and made over them the sign of the cross, after the pattern of which they separated themselves unto the four parts of the world: even so the preaching of the Cross of Christ, renewed by Saint Francis, would be carried by him and the brothers throughout all the world; the which brothers, after the fashion of the birds, possessing nothing of their own in this world, commit their lives wholly unto the providence of God.