bird roosting box

The listings show several common materials: wood, galvanized steel, plastic, and recycled poly lumber.

Many boxes are built for easy cleaning: small cage nests often have hinged lids, and several owl boxes include a front or clean-out door plus drainage holes so the interior can be opened, flushed, and bedding replaced easily.

Some boxes are labeled weather- or rust-resistant or designed for all-weather use. Recycled poly lumber options are specifically noted to resist cracking, splitting, and fading when left outdoors.

Some cage-style nests include bolts, washers, and wing nuts for mounting. Several owl boxes arrive assembled and include mounting strips and screws; a few listings also include nesting material or space to mount a camera.

Listings show a range of mounting styles: wall-mounted boxes, freestanding units, and some designs intended for in-ground mounting depending on the model.

Hole diameters in the listings include about 3.5 inches (used in some screech and saw-whet owl boxes) and about 7 inches (shown for a barred-owl box).