| Carboneras, Carles 1992 : 69 | Bird Checklists of the World |
|---|---|
| Database entry includes a range map and justification for why this species is critically endangered• Arnold, Paula: Birds of Israel, 1962 , Shalit Publishers Ltd | The Clements Checklist of the Birds of the World 6 ed |
| Dodsworth, P T L 1912 | ADCOM, Dar el Kutub, 144 p |
|---|---|
| Systematic notes on Palearctic birds | Bird Checklists of the World |
Birds of Israel: A Pocket Guide to Common Species.
9