Migratory

a.
  1. Removing regularly or occasionally from one region or climate to another; as, migratory birds.
  2. Hence, roving; wandering; nomad; as, migratory habits; a migratory life.
    3. Migratory locust (Zoöl.)
    See Locust.
    Migratory thrush (Zoöl.),
    the American robin. See Robin.