Sonnet Rant: Invasive Species And Their Careless Carriers

Swine Flu is not the only thing that's spread
By careless people doing careless things.
Five hundred thousand bats, we learn, are dead
From white-nose fungus. Silent are their wings,
And closed now are the caves from which they flew.
Meanwhile a pamphlet's making all the rounds
To lecture boaters never to pooh-pooh
That zebra and the quagga mussels' bounds
Will keep expanding, grow from lake to lake,
Its larvae hitching rides in boaters' tanks.
The fungus, too, may come in people's wake
As they tour caves around the country. Thanks.
Free Comic Book Day was my topic 'til
I read this news. And now I've gone all shrill.