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Removing regularly or occasionally from one region or climate to another; as, migratory birds.

Passing from one body or state to another.

eichus and allies) parasitic upon birds. The species are numerous. -- Bird of passage, a migratory bird. -- Bird spider (Zoöl.), a very large South American spider (Mygale avicularia). It is said sometimes to capture and kill small birds. -- Bird tick (Zoöl.), a dipterous insect parasitic upon birds (genus Ornithomy…

Migratory; roving. [Obs.]

ly related species, but their ravages are less important. They are closely related to the migratory locusts of the Old World. See Locust.

Any one of numerous species of long-winged, migratory, orthopterous insects, of the family Acrididæ, allied to the grasshoppers; esp., (Edipoda, or Pachytylus, migratoria, and Acridium perigrinum, of Southern Europe, Asia, and Africa. In the United States the related species with similar habits are usually called grass…

Migratory. Sir T. Browne. -- n.

, Northeast, etc. -- Of passage, passing from one place, region, or climate, to another; migratory; -- said especially of birds "Birds of passage." Longfellow. -- Passage hawk, a hawk taken on its passage or migration. -- Passage money, money paid for conveyance of a passenger, -- usually for carrying passengers by…

ished conveyance, as a coach, steamboat, railroad train, etc. Passenger falcon (Zoöl.), a migratory hawk. Ainsworth. -- Passenger pigeon (Zoöl.), the common wild pigeon of North America (Ectopistes migratorius), so called on account of its extensive migrations.

upper parts are olive-gray, the head and tail blackish. Called also robin redbreast, and migratory thrush.