How birds fly: Unique Ahmedabad study links starling formations to threats from avian predators

In Ahmedabad, a unique study has unveiled a correlation between the formation shape of rosy starling flocks and the presence of avian predators. The research, conducted by Venu Divin and Jitesh Jhawar from Ahmedabad University, is the first of its kind in India and was published in the Integrative and Comparative Biology journal.

The study observed 3,023 flocks of rosy starlings, classifying their shapes in various categories. Researchers found that the presence of predators significantly altered the geometry of murmurations, with the "Small Road" formation becoming overwhelmingly dominant when predators were within 10 meters of the flock. This shape, having a larger surface area and pointed ends, may facilitate faster flight speeds for escape.

However, the study also revealed that predator presence alone did not consistently trigger murmuration displays, contradicting the common assumption that predators directly induce these formations. The findings highlight the importance of studying group living in birds and the need for field-based research to better understand their collective behaviors and responses.