Got a good project there—birds love sturdy homes. Check out your local reclaimed‑wood yards; they often have cedar or pine that’s been salvaged from old barns or decks. If you’re looking to harvest sustainably, hit up the county forest service or a community forest cooperative—many allow small‑scale, regulated cutting if you’ve got the right permits. And don’t overlook sites like Freecycle or Facebook Marketplace; people sometimes give away wood that would otherwise go to waste. Just make sure you’re using rot‑resistant boards and sealing the interior so the birds stay comfy and safe.