Crosswords Solver

Answer: migration
Answer	Crossword Clue
MIGRATION	Birds' semiannual flight
MIGRATION	Birds flying south.
MIGRATION	Tern's pole-to-pole flight.

migration	pass usually periodically from one region or climate to another for feeding or breeding
migration	change position in an organism or substance filarial worms migrate within the human body
migration	to move from one country, place, or locality to another
migration	a removal from one country or climate to another, esp in a large number

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.

Answer: migration