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The Valley County Sheriff's Office is initiating evacation stages in areas near the Four Corners fire as it continues to scorch more than 5,500 acres.

Why birds sing before dawn: Ornithologist explains theories

Birds fly in a colorful sunrise sky near the One World Trade Center tower seen from The Heights neighborhood of Jersey City, N.J., Friday, Dec. 11, 2015. (Julio Cortez/AP)
Birds fly in a colorful sunrise sky near the One World Trade Center tower seen from The Heights neighborhood of Jersey City, N.J., Friday, Dec. 11, 2015. (Julio Cortez/AP)

You may have noticed a lot of birds chirping outside your window before the sun rises at this time of year.

Cornell University ornithology professor Michael Webster says there are a lot of different theories as to why. He speaks with Here & Now‘s Peter O’Dowd about some of the potential reasons.

This article was originally published on WBUR.org.

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