Crossword Clue:

Animal in a mass migration

AnswerCrossword Clue
LEMMINGAnimal in a mass migration
ORCAAnimal whose name consists of the postal codes of two states it passes in its migration
CAGOLDRUSHMass migration of 1849
ICEBRIDGEFrozen structure that facilitates animal migration
SLIMEMOLDProtoplasmic mass that's neither fungus nor animal