Smaller bodies, longer wings, earlier migrations: Untangling the multiple impacts of climate warming

[ScienceDaily]

When a research team reported last year that North American migratory birds have been getting smaller over the past four decades and that their wings have gotten a bit longer, the scientists wondered if they were seeing the fingerprint of earlier spring migrations.http://feeds.feedburner.com/~r/sciencedaily/plants_animals/birds/~4/pZuRj7QA2rw

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