Each sunrise in Las Cruces, Costa Rica, River Ingersoll’s field team trekked into the jungle to put the finishing touches on nearly invisible nets. A graduate student in the lab of David Lentink, assistant professor of mechanical engineering at Stanford University, Ingersoll needed these delicate nets to catch, study and release the region’s abundant hummingbirds and bats—the only two vertebrates with the ability to hover in place.

Source: Techxplore

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