Answer:
Migrant farmworkers who follow the harvest season.
Step-by-step explanation:
Anyone following any type of harvest season or a certain season whatsoever is considered a chair migration because you are moving from one place to another. Another excellent example of this is Geese going to a warmer climate during the Winter in the U.S they are used to a certain climate and temperature and have to go to that specific environment same for the migrant farmworkers they need a specific environment in a different location during the seasonal changes to grow their crops.
Hope this helped :)