Weather radar captures a stunning view of a spectacular daily bird commute. Link to article: Dot Earth Blog: Observed Planet: A Dawn Torrent of Tree Swallows Related Articles Observed Planet: A Dawn Torrent of Tree Swallows National Briefing | West: Drought Said to Claim Trillions of Gallons On Books Since 1988, Ohio River Dam Project Keeps Rolling Along

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Dot Earth Blog: Observed Planet: A Dawn Torrent of Tree Swallows