Finding ways to interact with other species that doesn’t involve exterminating them

I recently enjoyed a presentation from Joshua Klein a guy who is fascinated by crows.
http://www.ted.com/talks/joshua_klein_on_the_intelligence_of_crows.html

The gist is this:  Joshua's friend was complaining about crows making a big mess in his yard.  He acted like the birds were pests much like cockroaches and wanted to exterminated them from his yard. In researching crows, Joshua discovered these birds are intelligent: they learn from each other: and, they easily adapt to cultural changes.

Joshua has a great idea to create an environment that is mutually beneficial to crows and humans - he suggests that we should train a few crows to do meaningful jobs, such as cleaning up stadium trash.  He proved his theory that crows are trainable by creating a vending machine.

I look forward to Joshua taking the next step in training the birds to perform more substantial labor.