They call them fish hawks here.
It's at moments like this -- the osprey's effortless, flapless flight, the power, the grace -- that I wish I were a poet. The science of aerodynamics takes us only so far. The prose of the field guide feels stuffy and dry. In the introduction to his anthology of poetry about birds (Bright Wings, beautifully illustrated by David Allen Sibley), Billy Collins writes: "The genre of poetry makes its true appearance at the very point along the line of verbal expression where the possibilities of prose have been exhausted. The job of poetry, we might say, is to make sure that prose is never allowed to have the last word."
Let's give Hopkins the last word:
I caught this morning morning's minion, king-
dom of daylight's dauphin, dapple-dawn-drawn Falcon, in his riding
Of the rolling level underneath him steady air, and striding
High there, how he rung upon the rein of a wimpling wing
In his ecstasy! then off, off forth on swing,
As a skate's heel sweeps smooth on a bow-bend: the hurl and gliding
Rebuffed the big wind. My heart in hiding
Stirred for a bird, –- the achieve of, the mastery of the thing!