Together with Lester L . Short she wrote the chapter of the toucans, barbets and honeyguides in the Handbook of the Birds of the World ( Volume 7 ) and the book " Toucans, Barbets and Honeyguides : Ramphastidae, Capitonidae and Indicatoridae ".
2.
While there is still some controversy over when and how many origins of interspecific brood parasitism have occurred, recent phylogenetic analyses suggest two origins in Passeriformes ( once in New World cowbirds : Icteridae, and once in African Finches : Viduidae ); three origins in Old World and New World cuckoos ( once in Cuculinae, Phaenicophaeinae, and in Neomorphinae-Crotophaginae ); a single origin in Old World honeyguides ( Indicatoridae ); and in a single species of waterfowl, the black-headed duck ( " Heteronetta atricapilla " ).
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