[@inbook{RN1014,
 address = {Cape Town, South Africa},
 author = {Colahan, B D},
 booktitle = {Roberts - Birds of Southern Africa, VIIth ed},
 editor = {Hocket, P A R and Dean, W R J and Ryan, P G},
 pages = {99-101},
 publisher = {The Trustees of the John Voelcker Bird Book Fund},
 title = {African Pygymy-Goose Nettapus auritus},
 year = {2005}
}
,@inbook{RN839,
 address = {Cape Town, South Africa},
 author = {Colahan, B D},
 booktitle = {Roberts - Birds of Southern Africa, VIIth ed},
 editor = {Hockey, P A R and Dean, W R J and Ryan, P G},
 pages = {89-91},
 publisher = {The Trustees of the John Voelcker Bird Book Fund},
 title = {Maccoa Duck Oxyura maccoa},
 year = {2005}
}
,@article{RN1630,
 author = {Colahan, B D and Adam, R A and Erasmus, P},
 journal = {Mirafra},
 pages = {4-5},
 title = {The African Finfoot–a new bird for the Free State list},
 volume = {12},
 year = {1995}
}
,@inbook{RN2199,
 address = {Johannesburg, South Africa},
 author = {Allan, D G  and Colahan, B D},
 booktitle = {The atlas of southern African birds Vol I: Non-passerines},
 editor = {Harrison, J A  and Allan, D G  and Underhill, L G  and Herremans, M  and Tree, A J  and Parker, V  and Brown, C J},
 pages = {305},
 publisher = {BirdLife South Africa},
 title = {Blackrumped Buttonquail Turnix hottentotta},
 year = {1997}
}
,]