title: On the tongue of a hummingbird: its role in the rate and energetics of feeding.
mesh_terms: D000818:Animals; D001717:Birds; D005247:Feeding Behavior; D005260:Female; D008297:Male; D008433:Mathematics; D010944:Plants; D012044:Regression Analysis; D013045:Species Specificity; D013395:Sucrose; D013997:Time Factors; D014059:Tongue / Q000033:anatomy & histology* / Q000502:physiology
chemical_list: D013395:Sucrose