摘要：) of anchovy during early and late provisioning, respectively. Greater crested terns have lower energetic requirements at the individual (range: 15-34%) and population level (range: 1-7%) than the other Benguela endemic seabirds that feed on forage fish. These modest requirements - based on a small body size and low flight costs - coupled with foraging plasticity have allowed greater crested terns to cope with changing prey availability, unlike the other seabirds species using the same exploited prey base.
