Whither, midst falling dew,
While glow the heavens with the last steps of day
Far, through their rosy depths, dost thou pursue
Thy solitary way?
...
Read full text
in the last stanzas it's obvious. William is saying that the waterfowl, the duck, goose or whatever might make it somewhere to sleep and not be shot by a hunter, and that he himself might also be safe if that same God protects him... He who, from zone to zone, Guides through the boundless sky thy certain flight, In the long way that I must tread alone, Will lead my steps aright. great poem, profound philosophy set to rhyme.
Great writing and it is wonderful.