The federally endangered bird, the snail kite, was faced with an interesting dilemma: The island apple snail was good to eat, but about two to five times bigger than the native snail that the bird usually consumed. What’s a hungry bird to do? Evolve – quickly.

A study by a team of University of Florida researchers has found that in about 10 years, the snail kite has evolved to develop a larger beak as its new prey, the island apple snail, proliferated and became invasive. The study is published in Nature Ecology & Evolution.

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Humans have been altering natural waterways for centuries, but only in the last several decades have dams raised ecological concerns.

N. LeRoy Poff, professor of biology at Colorado State University, studies the ecological impact to rivers from human-caused changes, such as dam building, and how these modified river systems can be managed for resilience.

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