Deuteronomy 32:11

כנשר יעיר קנו AS AN EAGLE STIRRETH UP ITS NEST — He guided them with mercy and pity like the eagle which is full of pity towards his young and does not enter its nest suddenly — before it beats and flaps with its wings above its young passing between tree and tree, between branch and branch, in order that its young may awake and have enough strength to receive it (Sifrei Devarim 314:1). יעיר קנו means, AWAKENS ITS YOUNG (i.e. קן, “nest” is a term for young birds). על גוזליו ירחף IT HOVERETH OVER ITS YOUNG — it does not press heavily upon them, but hovers above them — touching them and yet not touching them. So too, the Holy One, blessed be He, (Job. 37:23) “The Almighty, we did not find Him to be too powerful in strength”: when He came to give the Torah to Israel, He did not reveal Himself from one side, (thus concentrating His power at one point), but from four sides, as it is said, (Deuteronomy 33:2) “The Lord came from Sinai, and shone forth from Seir unto them; He appeared from Mount Paran"; also (Habakkuk 3:3) “God came from Teman” — this is the fourth side (Sifrei Devarim 314:1). יפרש כנפיו יקחהו [AS AN EAGLE …] SPREADETH ABROAD ITS WINGS, TAKETH IT — When it comes to remove them (the young) from one place to another, it does not take them with its claws, as other birds do: because other birds are afraid of the eagle that soars so high and flies above them, therefore they carry them (the young) by their (the mother’s) claws for fear of the eagle. But the eagle is afraid only of an arrow, therefore it carries them (the young) on its wings, saying, “It is better that the arrow pierce me than that it should pierce my young”. So, too, the Holy One, blessed be He, says, (Exodus 19:4) “I bare you as on eagles wings” (Mekhilta): when the Egyptians marched after them and overtook them at the Red Sea, they threw arrows and stone missiles at them, whereupon at once “The angel of God moved … and came between the camp of Egypt [and the camp of Israel]” that it might receive the arrows etc. (Exodus 14:19—20 And Rashi thereon).

As an eagle stirs up her nest, broods over her young, spreads abroad her wings takes them, bears them on her pinions:

כְּנֶ֙שֶׁר֙ יָעִ֣יר קִנּ֔וֹ עַל־גּוֹזָלָ֖יו יְרַחֵ֑ף        יִפְרֹ֤שׂ כְּנָפָיו֙ יִקָּחֵ֔הוּ יִשָּׂאֵ֖הוּ עַל־אֶבְרָתֽוֹ׃