Hummingbirds Migrating Earlier in Spring

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CHARLESTON, S.C.  — Ruby-throated hummingbirds are migrating to North America weeks earlier than in decades past, and research indicates that higher temperatures in their winter habitat may be the reason.

Researchers say the early arrival could mean less food at nesting time for the tiny birds that feed on insect pests, help pollinate flowers and are popular with birdwatchers.

Read more:

http://www.weather.com/news/hummingbird-migration-20130218

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