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Watch how the masked birch caterpillar defends its leaf shelter. New research shows that the noisy, bottom-scraping display you see here evolved from walking. The finding has implications for the evolution of animal communication in many species. Read the original research here (open access):

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current16:29, September 9, 2013Thumbnail for version as of 16:29, September 9, 2013480 × 269 (10 KB)Evo13kemme (wall | contribs)created video