The term used to describe animal movements in response to environmental changes is behavioral adaptation. This reaction can include migratory patterns, hibernation, and changes in feeding behavior in response to factors such as temperature, food availability, or seasonal variations. Such adaptations are vital for the survival and reproductive success of species, helping animals navigate challenges posed by their environment. Understanding these behavioral adaptations is crucial in fields like ecology and wildlife conservation, as it informs strategies to protect species and their habitats in the face of environmental changes.