25 agosto 2015
Visual mimicry lets the helmeted woodpecker (Dryocopus galeatus) live on the threatened Atlantic forest turf of two bigger birds — the lineated Dryocopus lineatus and robust (Campephilus robustus) woodpeckers — reducing the likelihood of being displaced in an area of foraging.
http://www.sciencedaily.com/releases/2015/08/150825125803.htm
