Laying hen is one of the most exploited animals in the world.
Most of laying hens live in cages. with no access to fresh air, green grass or sunshine. They live in huge hangars, artificially stimulated by light and ventilation so that they produce more eggs than they would normally do.
In nature, a laying hen would have about 12 eggs in a year. On factory farms it’s 300 eggs per yer. In nature, hens can live up to 8-10 years. On factory farms they get only about 18 months, because by that time they are too exploited and exhausted to produce any more. And when they cannot produce, they are sent to a slaughterhouse where they are killed for meat.