We've also used and abused water and soil so that there's a lot less of each, and trampled thousands of species that probably aren't coming back. Our world, some respected voices warn, could one degenerate into something resembling a vacant lot, where crows and rats scuttle among the weeds, preying on each other.

Alan Weisman from Audubon magazine's July/August issue titled The World Without Us.

(note: yes notice my cheery posts lately...sorry....also I do take issue that crows are not a junk species by any account, this is also true for rats. We just tend to dislike species that do well in our wake (i.e. gulls, pigeons, house sparrows, starlings, etc etc)