Crickets living in the wild generally feed on buds, leaves and roots. In addition to all kinds of fresh vegetables and fruits, the breeder will also choose some food to make a rich nutritional meal in proportion.
Crickets chirp for food or for their own territory. They intimidate each other by shouting and swear their attitude of safeguarding sovereignty. If someone encroaches on their territory, they will shout to scare off the opposing hair.
Source: @113ink