One component of my research focuses on the alpha taxonomy of birds, as well as on the phylogeny of recently radiated clades of birds. Tied to this focus is work with the basic geography of bird distributions, and with the composition of local avifaunas, based on detailed site inventories and scientific collections around the world. My work with the geographic and ecology of species' distributions, however, has taken me into other fields, including conservation biology and planning, invasive species biology, and disease transmission systems. In the latter field, my work has focused on numerous disease systems, including Chagas Disease, malaria, dengue, leischmaniasis, and ebola/Marburg. In general, my work is collaborative in nature, and usually involves geographers, computer scientists, and biologists.
They collected specimens of 23 species from two locations: the isolated Nakauvadra Range in the extreme northeastern part of Fiji’s largest island, Viti Levu; and the southern island of Kadavu. The Kadavu specimens were the world’s first from this island with associated genetic tissue samples, and the collection included three endemic bird species: Whistling Dove (Ptilinopus layardi), Kadavu Honeyeater (Xanthotis provocator), and Kadavu Fantail (Rhipidura personata), plus numerous morphologically unique island forms such as Golden Whistler (Pachycephala pectoralis) and Collared Kingfisher (Todiramphus chloris).