Acknowledgments

Ms. Janine Dunlop, Library Manager of the Niven Library at the University of Cape Town, is thanked for tracing some of the literature cited in this account and extracting SAFRING data for the species. I am deeply grateful to the Ditsong National Museum of Natural History in Tshwane, South Africa, particularly to Ms. Mpho Malematja and Mr. Mpho Kalo, for granting me access to the ornithological collection and their generous assistance.