The evolution of migration: Ancestral songbirds headed south for the winter

4 agosto 2014

To scientists, long distance migration still holds many mysteries, one of which is: Where did migration begin and how did it evolve? This question has long been a debated topic among scientists, but thanks to new research, we may have an answer for one of the largest groups of migratory birds.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/lwEEs0rzgqk/140804151419.htm

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