... by The Company of Biologists Ltd 2023 Summary: Groups of birds comprising a homogenous mass composition are faster and expend less energy over the course of a flight than flocks composed of a mixture of heavy and light individuals. Biologging Collective motion Columba livia Flight Flock...

.... In this context, the ‘distributed cognition’ hypothesis suggests that reliance on other group members relaxes selection for individual cognitive abilities. Here, we tested how cognitive processes respond to evolutionary changes in collective motion using replicate lines of guppies ( Poecilia reticulata...

.... These interaction rules differ not only between species, but also between individuals in the same group. These differences have wide-ranging implications, affecting how groups make collective decisions and driving the evolution of collective motion. Here, I describe how trajectory data can be used to infer how...