Accordingly, when the Harpies appeared as usual to carry off the food from Phineus's table, they were driven off and pursued by Calais and Zetes, the sons of Boreas, as far as the Strophades islands in the Aegean.
But when the legend became common property, other and better-known heroes were added to their number - Orpheus, Castor and Polydeuces (Pollux), Zetes and Calais, the winged sons of Boreas, Meleager, Theseus, Heracles.
This was done by the winged sons of Boreas, and Phineus now told them their course, and that the way to pass through the Symplegades or Cyanean rocks - two cliffs which moved on their bases and crushed whatever sought to pass - was first to fly a pigeon through, and when the cliffs, having closed on the pigeon, began to retire to each side, to row the "Argo" swiftly through.
The climate of Thrace was regarded by the Greeks as very severe, and that country was spoken of as the home of the north wind, Boreas.
In works of art Boreas was represented as bearded, powerful, draped against cold, and winged.