Nesting in a service entrance cap on a utility pole. The adjacent service entrance cap is occupied by European Starlings:
http://www.inaturalist.org/observations/73538

Nesting in a service entrance cap on a utility pole. The adjacent service entrance cap is occupied by House Sparrows:
http://www.inaturalist.org/observations/73539

Bringing nesting material to a service entrance cap on a utility pole.