| food supplementation by an invasive fleshy-fruited shrub sustains body condition of a native frugivorous bird during winter. | birds tend to adjust their behavior and physiology to changes in food availability in their environment. seasonal fluctuation of food resources may act as an energetic challenge, augmenting hypothalamus-pituitary-adrenal axis (hpa axis) activity, leading to an increase in corticosterone concentrations and promoting the metabolism of energy stores. plant invasions may alter seasonal food fluctuations by providing a food supply during scarce seasons. this could attenuate the energetic challenge, r ... | 2019 | 30019849 |