Is the Bird Bird a migratory bird?

The Bird Bird is a bird who does not migrate.The bird's refers to a bird that does not migrate, and the migration belongs to migratory birds.The reason why it is migrated is mainly because of environmental problems. In some places, the temperature is low in winter and the food is scarce. The birds must fly to the warm place in the south before the winter, and wait until the spring will return to the original environment.Most of the places where the birds live are tropical areas, so there is no characteristics of migration.