upswarming

Example:The birds began to migrate southward, driven by the changing seasons.

Definition:Moving from one region or area to another, often seasonally. For example, birds may migrate from one place to another as seasons change.

Example:The butterflies began their rising phase, flying higher and higher.

Definition:Moving upwards or increasing in position or importance. In the context of environmental biology, it can be used to describe the upward movement of species

Example:The insects started their ascending path up the mountain.

Definition:Moving upwards in a vertical direction from a lower to a higher altitude or position