Do you have a zone 5?
I guess we are lucky ... we do have a zone 5 near us. We have a number of multi acre parcels of land that are not developed surrounding us and we have the National forest only a mile away as well. There is a good deal of wildlife traveling in and out of the area because of this. I can also get seeds for restoration work from the gene pool that is adapted to my area.
Gutta cavat lapidem (Dripping water hollows out a stone) - Ovid