Jonathan Steven Pelegrin is a biologist with M.Sc. and Ph.D. degrees. He has specialized in evolution, paleobiology, and the ecology of birds. He is interested in the research of speciation and adaptation processes (especially bird and mammal taxa) in a historical and macroevolutionary context (paleontology), with an emphasis on ecological interactions and biogeographical patterns. His current research aims to determine the relationship between macroevolutionary processes of non-passerine bird lineages and different climate and geological changes occurring since their origin in the Mesozoic to the present times. He is currently a Professor of Evolution, Ecology and Zoology at Universidad Santiago de Cali.