Start with the use stated for the individual model. A nesting product labelled for an aviary bird, a poultry nest and a native-wildlife box should not be treated as interchangeable designs.
Compare the manufacturer's intended species or housing use, box dimensions, entrance measurements, mounting method and access for inspection. Check those details for the actual model rather than choosing from a general garden-bird description.
Materials and fittings differ. For a product-specific example, Bainbridge's Metal Nesting Box with Plastic Rollaway Nest - Single Hole has galvanised-steel sides and a detachable plastic basket insert and is described for poultry. That construction should not be generalised to every wooden bird box or nesting product.
Read each model's assembly and mounting instructions and check what is included before ordering. Do not infer predator protection, insulation performance or suitability for an Australian native species from a product name alone.
Use the manufacturer's instructions for the specific model. For species-specific nesting, breeding, placement or welfare questions, seek qualified avian advice rather than relying on a universal compass direction, installation height or annual cleaning rule.
What should I confirm before buying?
Confirm the intended use, dimensions, opening, installation method and removable parts. If the product information does not establish suitability for your bird and setup, ask for model-specific advice.