crickets swarms are not uncommon,because when they traval in lage groups they have a better survival rate. About 50 percent of them die when the split up comparad to when they don't. However,swarms can be nuisance especially for farmers,because they damage their crops. Many crickets are nocturnal andthey make a chiping noise by rubbing thir wings together. However,the colder it gets,the slower crickets chirp