Can Aggression Be Determined by Female Birds' Markings?

Researchers have found that the markings of female birds can tell us more than just their species and gender. Repeating a previous study has yielded a surprising discovery refuting what was thought to be a link between their markings and aggressive behavior when defending their nests. Published in The Auk: Ornithological Advances, the study reveals that the meanings behind the markings of female birds may change from one place to another despite a similarity in species.