After all, is it 'laying in bed' or 'lying in bed'? There's no doubt about it—grammar can be tricky. Our language has rules that make sense, don’t make sense and then completely contradict each other.

Chicken farms in the United States are large. Approximately 95 percent of all laying hens are raised on farms with more than 75,000 birds. Most of these hens reside in climate-controlled confinement ...