The sermon to my sister birds

St Francis was traveling with some companions, they happened upon a place in the road where birds filled the trees on either side. Francis told his companions to "wait for me while I go to preach to my sisters the birds". The birds surrounded him, drawn by the power of his voice, and not one of them flew away. Francis spoke to them:
My sister birds, you owe much to God, and you must always and in every place give praise to Him; for He has given you freedom to wing through the sky and He has clothed you... you neither sow nor reap, and God feeds you and gives you rivers and fountains for your thirst, and mountains and valleys for shelter, and tall trees for your nests. And although you neither know how to spin or weave, God dresses you and your children, for the Creator loves you greatly and He blesses you abundantly. Therefore... always seek to praise God. When St Francis of assisi bid them away they flew off in the shape of a cross!