An article published in the journal “Current Biology” describes a research on the reasons for the survival of primitive birds the great extinction that struck the dinosaurs. According to a team led by Derek Larson, a paleontologist at the Philip J. Currie Dinosaur Museum in Alberta, Canada, at the end of the Cretaceous the conditions became such that winged dinosaurs and carnivorous birds became extinct while the ancestors of modern birds that ate seeds survived.