And whether they eat fruit, nectar, bugs or even frogs, they almost invariably hunt at night.įor at least the past 40 years, scientists have hypothesized that birds pushed bats to become nocturnal. Roughly 1,400 bat species live around the world. Instead, they have used them to answer an outstanding evolutionary question: Why are bats nocturnal? Forced into Night Scientists have not missed these similarities.
And the other three also inhabit islands. “It’s pretty surreal.”īut this isn’t the first bat species known to venture into daylight-it’s the fourth.
“This is a particularly interesting case on the island,” says Marcus Chua, a graduate student at George Mason University who described the horseshoe bats’ behavior earlier this year in the journal Mammalia.
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