Cut small, uniform natural tree branches or wooden dowels into standardized lengths to construct the four interlocking side walls of your cabin tray. Build a sturdy square base frame using cedar boards, attaching a fine wire mesh bottom sheet to ensure proper ventilation and drainage. Stack and notch the wood dowels at the corners using a Lincoln-log style joinery method, securing each layer with waterproof wood glue and small finish nails to form four-inch-high side walls. Construct a peaked wooden roof canopy attached to two sturdy upright center posts, leaving wide open side entryways between the walls and roofline for easy bird access. Apply a coat of non-toxic linseed oil or natural timber seal over all exterior log surfaces to protect the wood from moisture weathering.
