A recent study found that 13 percent of families in the US now own a total of 85 million backyard (后院) chickens, with each owner having an average (平均) of five chickens, reported Fortune. They raise chickens to get eggs. The self-sufficiency (自给自足的) lifestyle is getting popular, especially after the COVID-19 pandemic. More than that, as a hobby, keeping chickens can teach kids about where their food comes from and bring more fun to families.