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How does a Blackpoll Warbler prepare for the journey?

April 26, 2017journey prepare warbler

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How does a Blackpoll Warbler prepare for the journey?

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“What they’re fueling themselves with is fat. A blackpoll warbler is going to weigh about 15 grams, and it will add a little bit of extra weight in fat before it leaves– and that fat is the fuel that will carry it across the Atlantic.