The new measure, termed “evolutionary heritage,” highlights the importance of unique species traits—which include physiological adaptations, like beak variations in different birds—when assessing the richness and complexity of life. The new measure, termed “evolutionary heritage,” highlights the importance of unique species traits—which include physiological adaptations, like beak variations in different birds—when assessing the richness and complexity of life. Evolution Paleontology & Fossils Phys.org – latest science and technology news stories