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'Live fast, die young' lifestyle reflected in birds' feathers


PhysOrg
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Animals' lives tend to follow a quicker tempo as they get farther from the equator—birds at more northern latitudes mature faster, start reproducing younger, and live shorter lives, probably as a way of dealing with seasonal variation in resources. A new study from The Auk: Ornithological Advances shows for the first time that this pattern also plays out in birds' feathers, with northern birds completing their annual molt faster to keep up with the demands of life far from the tropics.

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