Avian lower beak is always overlooked: its coordinate role in shaping species-specific beak should not be underestimated
1. College of Life Science/Hebei Basic Science Center for Biotic Interactions, Institute of Life Science and Green Development, Hebei University, Baoding, China
2. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
3. University of Chinese Academy of Sciences, Beijing, China
4. Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, China
leifm@ioz.ac.cn
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