Your contributions to the cause, through donations or purchase allow us to make crucial, systemic changes. We are extremely frugal at truegreenfighter.com, we even pick dumpsters for scrap lumber to make bird houses. Still, we must purchase native non-invasive nursery stock, the leaves of which process airborne carbon back into oxygen. Try as we might to manage and propagate existing food stuffs, at times we must buy some cracked corn and sunflower seeds in the winter to support birds.