data sets on twin cities for art project

[Squirrel Zurkow]

Hello!
I'm looking for data to use in an animated project on airspace (entitled Flight) in the Twin Cities.

Birth and death rates, animal sightings, winter air-borne activities, would all be welcome.

For reference,
"Flight explores the notion of “air” through both poetic and practical views. The custom data-driven application animates a vision of what populates the proximate airspace in real time. Airplanes and satellites on schedules, up-to-the-minute weather conditions, voluntarily reported bird sightings, less credible but nonetheless “real” databases for UFOs, and averaged data on bats and less desirable birds such as pigeons and starlings compose the world of Flight."
an earlier version of the project is here: http://o-matic.com/flight/flight.html

Thank you!
Marina Zurkow