No. You would take a sampling. This means gather some fresh droppings from a few different places, usually the easiest way to get a sampling is to go out early and collect overnight droppings from underneath the roosting bars.
If possible, take a sampling of fresh droppings to your vet for a fecal float, this test will tell you if they need deworming.
Basic look over is to check for lice/mites, see that crops are emptying overnight, that they have adequate room in their housing and are eating a nutritionally...