Tiny backpacks reveal the secret, sometimes circuitous migrations of small songbirds
Squinting through my binoculars, I scanned the dense branches of a black spruce, trying my best to catch a glimpse of the thin legs of a small black, white and yellow songbird. I was on the hunt for a yellow-rumped warbler—a bird affectionately called "butter-butt" by birdwatchers after the distinctive buttery yellow patch of feathers above its tail.
Phys.org
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CurrentWire ranked this story 60 of 100 in the snapshot this page was rendered from.
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- 30.5 of 35
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- 4 of 20
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Strongest signal: freshness, 30.5 of 35. How each signal is calculated.
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