Construction plays a role in Herblore Habitat. The jadinkos have certain preferences that allow them to be caught. One of these preferences is an environmental feature. You do not gain construction experience for building the habitat, but it uses no materials, and you don't need a saw or hammer. If your construction level is too low to build the feature, Papa Mambo will build it for you, at a price. Alternatively, you can also build features above your construction level while being assisted by a player who has the required level for it.