Mark Drever is a Research Scientist at Environment and Climate Change Canada (ECCC), focusing on population ecology of birds and wildlife conservation. His research includes studying effects of climate conditions on waterfowl, timber harvest and natural disturbances on forest birds, and movements of seabirds. Currently, his work addresses issues such as plastic ingestion in shorebirds and seeks to understand how coastal activities influence intertidal food webs for migrating sandpipers in key coastal ecosystems.

Luis Bautista-Sopelana is a research scientist at the Spanish National Research Council (CSIC). His research focuses on bird behaviour and population dynamics, exploring topics ranging from the perplexing tendencies of overuse and under-use of feeding areas to the near-optimal foraging results achieved by birds through their finely tuned physiological responses to variability and risk. While studying bird diets, he has also made field observations that suggest possible self-medication. This is difficult to prove in wild birds, yet it opens fascinating new perspectives on avian studies.