Most churches have at least some land around their church building for which they are stewards.
Even most urban churches have at least a little land - and care of this green space is even more important in an urban setting where there is so little habitat. Consider your use of pesticides and herbicides, especially for merely ornamental purposes. Second, consider the kinds of plantings and landscaping you are using on your church property. Reducing your lawn area and replacing it with plantings of native trees, bushes, and plants will provide habitat for God's creatures that need the kinds of berries, nectar, seeds, and shelter that are native to this area. And, as God's true handiwork, not human's version, is revealed, it becomes a spiritual resource.