Wanderers are dragons or groups of dragons that don't settle in one place, rather move around gathering food and resources. They will often have a weaver, who is in charge of making tapestries to sell. What do they do with the scales, you ask? They use the scales to buy silk dye for better profit. They also use the scales for buying medicine and rent for whenever they might have Young dragonets or eggs that they cannot carry around in safety, as they could drop an egg or a dragonet who cannot fly, sending them to their deaths. They stay at the rented place until their children can Wander with them in safety.
