Researchers analyzed saliva the nocturnal mammals leave behind when sipping nectar from plants and residential hummingbird ...

Because bats are small, secretive, feed at night ... Pollen, like insects, is highly nutritious. The flower-eaters are usually small and have long pointed heads, long tongues, and the ability to hover ...

When bats aren't flying, they often dangle from cave ... However, because bats do not have hollow bones like birds do, they do not have as much capacity for lift during flight.