"spreading its wings and taking them" (upon them): as it is written (Devarim 1:31) "and in the desert, where you saw how the L-rd your G-d bore you."
"bearing them on its pinion": as it is written (Shemoth 19:4) "and I bore you on eagles' wings."
Variantly: "as an eagle wakes its nest": in time to come, viz. (Song of Songs 2:8) "The voice of my Beloved — behold He is coming" (to redeem me).
"spreading its wings": viz. (Isaiah 43:6) "I will say to the North "Give (My exiles) etc."
"bearing them on its pinion": (Ibid. 49:22) "and they will bring your sons in (their) bosom."