Silencing the booming chorus
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From 2007 to 2009, a yellow fever virus outbreak nearly decimated El Parque El Piñalito’s howler monkey populations. Exposure to a past virus may have aided brown howlers’ survival.
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TWO ROUTES FOR MONKEY LOVE
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Across the animal kingdom, males hoot and holler to attract females and ward off competing suitors, but howler monkeys evolve two sex tactics to pass on their genes.
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