Welcome to Cedarnest birdhouses. Cedar wood bluebird bird house this is for bluebird house nest house open from the front. Hand-made from rough swan, weather-resistant, western red cedar. Bluebirds seem to prefer the rough-sawn cedar because of its natural look and feel. The rough surface also enables the birds to hold on to it with their claws. This house is equipped with a predator guard. The predator guard will minimize predators such as cats, cocoons, starlings and others from being able to reach the nesting area.