There are approximately 37 bat species in the area of Mexico where I conducted my field work. About 5 of these drink nectar, although I usually only catch about 3 of these species: Leptonycteris yerbabuenae, Glossophaga soricina and Choeroniscus godmani.
Below are pictures of Crescentia alata trees, from my field site in Mexico.
The flowers are hermaphroditic (have male and female parts), but putatively self-incompatible. They are pollinated by bats, which drink the nectar from the bottom of the flower, then get dusted with pollen on their head and shoulders, and transfer this pollen to the female parts of other flowers as they go about their foraging. The fruits are large gourds, which are very hard to break open, and not obviously eaten by animals in the area. Dan Janzen, a famous tropical ecologist, theorized that the original seed disperser of the fruit went extinct in the Pleistocene, and may have been a native elephant-like animal or Pleistocene horse.
The flowers are hermaphroditic (have male and female parts), but putatively self-incompatible. They are pollinated by bats, which drink the nectar from the bottom of the flower, then get dusted with pollen on their head and shoulders, and transfer this pollen to the female parts of other flowers as they go about their foraging. The fruits are large gourds, which are very hard to break open, and not obviously eaten by animals in the area. Dan Janzen, a famous tropical ecologist, theorized that the original seed disperser of the fruit went extinct in the Pleistocene, and may have been a native elephant-like animal or Pleistocene horse.