Once you're on eBird, follow these steps:
1. View and Explore Data.
2. Maps.
3. Select Species and Continue (type 'savannah sparrow').
4. Change Location.
5. Select a region (Wisconsin).
6. Select a sub-region (Counties in Wisconsin).
7. Select "Dane" and Continue.
8. Wait for markers to load...
Presto! Now you can zoom in or out on the map and find out where other eBirders have reported Savannah Sparrow.