Can you put a Chicken coop on Concrete?

Chicken coops can be kept on concrete however the Chicken's may not be too happy. Chickens love to forge, they will scratch up the ground, eat grass and may even leave shallow craters in the earth to bathe in the dust. Also insects are more likely to enter a coop on grass than a coop on concrete. Insects make a very nutritious snack for chicken and adds more nutrient to their eggs. If you keep your Chicken on concrete you will need to add grit & variety to their diet. Grit is basically small rocks which aids in the digestion process and can normally be found by the chickens if kept with grass or dirt.