Hunger is not the Only Determinant of Nestling Begging Behavior and Parental Feeding in the Black-Billed Magpie Pica pica
Lee, S. I., Choi, J., & Choe, J. C. Nestlings can employ a combination of tactics to obtain provisioning from the parents. In this observational study, we examined whether nestling begging behavior reflects hunger level and how parents respond to nestling begging in the Black-billed Magpie Pica pica by putting small video-cameras in six