Bibliography : Osprey
W. Geoffrey Arnott | Birds in the Ancient World from A to Z |
Gerald of Wales; Thomas Forester, trans.; Richard Hoare, trans; Thomas Wright, ed. | The historical works of Giraldus Cambrensis |
Gerald of Wales; Thomas Forester, trans.; Thomas Wright, ed. | The Topography of Ireland |
Hana Šedinová | Heartless king and kind-hearted plebean. Some peculiarities of the parental care in birds, as documented by classical and medieval authors |