In lunfardo he is the one who makes bardo ("scandal, lack of control"). See the bard, barde, barde.
The same in my town, Quintanilla del Agua, also in Burgos, but with a structure of wooden sticks that housed it and that was covered with branches, steppe branches, etc.
In my village Hontoria de la Cantera, Burgos Province, " 34 bardero; is a small room where usually is kept the truck or firing to consume during the winter and has no doors