REFERENCES
- MaClean , G. L. 1993 . Roberts' Birds of southern Africa Cape Town : John Voelcker Bird Book Fund. .
- Newman , K. B. 1989 . Newman's Birds of Botswana Johannesburg : Southern Book Publishers. .
- Newman , K. B. 1989 . Newman's Birds of southern Africa Johannesburg : Southern Book Publishers. .
- Penry , H. 1994 . Bird Atlas of Botswana Pietermaritzburg : University of Natal Press. .
- Smithers , R. H.N. 1964 . A checklist of the birds of the Bechuanaland Protectorate and the Caprivi Strip. Salisbury, Trustees of the National Museums of Southern Rhodesia