Haworth, Evan S.; Cunningham, Michael J.; Tjorve, Kathleen M. Calf
(PeerJ, 2018-06)
Sugarbirds are a family of two socially-monogamous passerine species endemic to
southern Africa. Cape and Gurney’s Sugarbird (Promerops cafer and P. gurneyi) differ in
abundance, dispersion across their range and in the ...