They might look like earthlings

On slow days, I tend to let my mind drift. It gets to some odd places that way.

They Might Look Like Earthlings

I saw the saucer, whirling bright, float high above the ground,
while small grey creatures in the light were gently floated down.
With thin pink feet and beady eyes, like possums or their cousins,
they hit the ground and waddled off, in couples and in dozens.
The saucer left as silently as any passing breeze,
and left my mind a prey to many questions such as these:
Were the creatures really aliens, or earthling abductees?
And why would "they" abduct possums? And what would "they" think of the fleas?

Now when I round a rural corner any moonless night,
and something small and grey and fey stands frozen in the light,
and I can’t stop the car in time, I always have my doubts.
did I just squash a possum, or road kill an alien scout?