@RoboticistDuck The utility company (there's practically a monopoly on electric utility companies in Poland) takes care to keep those supports. Tradition is the main reason, but no one wants fried storks to short the lines.
@szescstopni interesting the differing priorities and strategies from Japan. Here they top utility poles and other potential nesting spots with spikes to prevent them. Meanwhile, scoring a swallow nest here in front of ones’s door is considered lucky and a great honor!
@szescstopni extra support for heavy nests!