Some animals migrate and therefore come and go seasonally.
Reindeer, for example, migrate twice a year in large herds. The quality of an animal's meat or skin varies, even if the species is present year-round. During the fall reindeer migration, these animals are particularly attractive to people who hunt them because the animals are fat after a summer of feeding. Their coats are thick and lustrous in preparation for the winter ahead. During the spring migration, however, they are thin after having endured winter food shortage.