Next time you savor your favorite Costa Rican coffee blend, offer a toast to the yellow warbler. The tiny bird and its avian friends help protect the country's coffee crops by keeping the coffee berry borer beetle in check, according to a study published in Ecology Letters. "Based on this study, we know that native wildlife can provide you with a pretty significant benefit," says Stanford University conservation biologist Daniel Karp, the lead researcher. "Incorporating their conservation into your management of pests is absolutely something you should do."

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