This image depicts a number of chickens inside their coop, which were being raised for their eggs in a privately-owned backyard pen. In this particular view, a single male was perched at far right, along with nine female birds high above the rest of the flock below (see PHIL 14238, 14239, 14240). Eggs from these chickens were collected each morning to be used as food by their owners.
It's common for chickens, ducks, and other poultry to carry Salmonella bacteria, which is a type of germ that naturally lives in the intestines of poultry and many other animals, and is shed in their droppings or feces. Even organically fed poultry can carry Salmonella organisms. While it usually doesn't make the birds sick, Salmonella bacteria can cause serious illness when it is passed to people.