Definition of "migratory" []

• Characterized by migration; undergoing periodic migration: migratory birds. (adjective)
• Of or relating to a migration. (adjective)
• Roving; nomadic. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Even if that were possible (it's not) global warming still threatens to shift where crops CAN be grown (this is already happening, google research on massive shifts in migratory bird ranges - THEY know things are changing and adjust accordingly) and selfish Americans will let millions of (pick poor ethnic group here, probably African) die before building them nuke desalination plants, just wait and see."
• "We dream of birds, watch them pepper the sky in migratory lines that coil and uncoil such hard instincts in deep September."
• "Last I recall, they are expecting a 12% increase in migratory bird deaths this year."