Some birds better than others at adjusting to habitat degradation

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Before habitat degradation begins to cause population declines, the first response by wildlife usually comes in the form of behavioral changes — for example, switching their diets in response to changes in food availability. A new study looks at the diets of seed-eating birds in a South American desert and finds that while some can switch between seed types when grazing alters local plant communities, others continue to stick to old favorites, limiting their options.

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