Why Some Hummingbirds Choose to Balloon up Before Flying South

Wildlife NewsDate: October 13, 2016
Source: University of Toronto

Adult ruby-throated hummingbirds choose to pack on significant weight in the four days before their long migratory flights south for the winter, new research has found.


Read More: https://www.sciencedaily.com/releases/2016/10/161013150154.h

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