angled angles building cobwebs connected connection connections connectors danger electrical electrical-power electrical-wires electricity energy grid home house insulator power power-lines roof secure secured sky tied wired wires wiring electric power electricity poles electricity power lines equipment high voltage high voltage equipment house wiring insulators light power pole street light strength transformers cable cables dangerous electric high pole poles railway train voltage wire box computerised computerized control control-box electric-power electricity-poles electricity-power-lines high-voltage high-voltage-equipment house-wiring power-pole cutter cutting power disconnecting amount chaos city civilization massive post pylon station traffic Australian raven bare bare wires blue black carrion eaters corvids corvus coronoides crow electrical power electrical wires garbage collectors lone loud mournful omnivorous perched perching power lines predators raven scavengers shiny black