Identifying the sex of animals is important for conservation and behavior studies, but it can be difficult in species where males and females look similar. In this study, scientists tested simple body measurements to determine the sex of Galápagos penguins without harming them. By measuring features like bill depth and length, they correctly identified the sex of 95% of the penguins. Even using just bill depth alone was enough to achieve high accuracy. This method provides an easy and effective way to study and protect this rare and endangered penguin species.
Authors: Dr. Caroline D. Cappello & Dr. Dee Boersma
Journal: Endangered Species Research
DOI: 10.3354/esr00879
Photo credit: Dee Boersma
