While I'm on the subject of birds and the moon, here's some more.

The birds over the moon evoke any number of images. For example, Coleridge in the Ancient Mariner, as the protagonist approaches the revelation that leads to his salvation, he sleeps and wakes as

The moving Moon went up the sky, 

And nowhere did abide:

Softly she was going up,

And a star or two beside-

Looking beyond the darkness of the ship's shadow, he sees in the Moon's light

O happy living things no tongue 

Their beauty might declare:

A spring of love gushed from my heart,

And I blessed them unaware;

Sure my kind saint took pity on me, 

And I blessed them unaware.