Hummingbirds (Neotropics), sunbirds (Africa and Asia)
and honeyeaters (New Guinea) have convergent morphological
and physiological adaptations to a watery, sugary,
low-protein diet [7], but most hummingbirds hover while
visiting flowers, whereas sunbirds and honeyeaters perch,
with consequences for the way in which bird-pollinated
flowers and subsequent fruits are displayed in each region
[8]. Phyllostomid (Neotropics) and pteropodid (all other
rainforests) fruit bats have evolved their frugivorous and
nectarivorous habits independently [9].